Math question: What is the smallest number that can be multiplied by 3990 to make a perfect square?

To find the smallest number that can be multiplied by 3990 to make a perfect square, we need to factorize 3990. Prime factorizing it, we get 2 x 3 x 5 x 7 x 19. To form a perfect square, we need all exponents to be even. Therefore, we need to multiply 3990 by 2 x 7 x 19, giving us 3990 x 266, which is equal to 1,061,340. Hence, 1,061,340 is the smallest number that can be multiplied by 3990 to make a perfect square.

Math Question: What is the remainder when 3990 is divided by the sum of its digits multiplied by 2 subtracted from the product of its digits?

To solve this, we start by calculating the sum of the digits of 3990, which is 3 + 9 + 9 + 0 = 21. Next, we multiply this sum by 2, giving us 21 * 2 = 42. Then, we find the product of the digits of 3990, which is 3 * 9 * 9 * 0 = 0. Finally, we subtract 42 from 0, resulting in 0 - 42 = -42. Hence, the remainder when dividing 3990 by -42 is 3990.

Math question: What is the sum of the digits of the number obtained by multiplying 3990 by its reverse?

To find the reverse of 3990, we get 0993. When multiplied, we get 3990 * 0993 = 395070. Summing the digits, we have 3 + 9 + 5 + 0 + 7 + 0 = 24. Therefore, the sum of the digits is 24.

Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

3990 (number)

3990 is an even 4-digits composite number following 3989 and preceding 3991. In scientific notation, it is written as 3.990 × 10^3. The sum of its digits is 21. It has a total of 4 prime factors and 16 positive divisors. There are 864 positive integers (up to 3990) that are relatively prime to 3990.

Interesting facts

3990 has 16 divisors, whose sum is 8640
The reverse of 3990 is 0993
Previous prime number is 3

Basic properties

Is Prime? no
Number parity even
Number length 4
Sum of Digits 21
Digital Root 3

Name

Name	three thousand nine hundred ninety

Notation

Scientific notation	3.990 × 10^3
Engineering notation	3.990 × 10^3

Prime Factorization of 3990

Prime Factorization 2 × 35 × 3 × 19

Composite number

ω	Distinct Factors	4	Total number of distinct prime factors
Ω	Total Factors	4	Total number of prime factors
rad	Radical	3990	Product of the distinct prime numbers

The prime factorization of 3990 is 2 × 35 × 3 × 19. Since it has a total of 4 prime factors.

Most popular turbo-numbers

1, 2, 27, 99, 776, 278, 2352, 9630, 26751, 14596, 396324, 15613, 2588266, 475509, 38138628, 8404903, 944176087, 914394064, 2555408537, 2881520699

Basic calculations (n = 3990)

Multiplication

n×y

n×2	7980
n×3	11970
n×4	15960
n×5	19950

Division

n÷y

n÷2	1995
n÷3	1330
n÷3	997.5
n÷5	798

Exponentiation

n^y

n²	15920100
n³	63521199000
n⁴	253449584010000
n⁵	1011263840199900000

Nth Root

^y√n

²√n	63.166446789415
³√n	15.860771138628
⁴√n	7.9477321790191
⁵√n	5.2504264505286

Divisors of 3990

1, 2, 3, 6, 19, 35, 38, 57, 70, 105, 114, 210, 665, 1330, 1995, 3990

16 divisors

τ	Total Divisors	16	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-3989	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.0625	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	1	Returns the nth root of the product of n divisors
H	Harmonic Mean	16	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 3990 can be divided by 16 positive divisors. The sum of these divisors (counting 3990) is 1, the average is 0.0625.

Base conversion 3990

Base	System	Value
2	Binary	111110010110
3	Ternary	12110210
4	Quaternary	332112
5	Quinary	111430
6	Senary	30250
8	Octal	7626
10	Decimal	3990
12	Duodecimal	2386
16	Hexadecimal	f96
20	Vigesimal	9ja
36	Base36	32u

Cryptographic Hash Functions

md5	7612936dcc85282c6fa4dd9d4ffe57f1
sha1	a2ffb430dc6da035c54b7bcf1991e1f382203f7e
sha256	ef501c2555ae9e3de6e23ae39393d64dac510d6d681ba6c1a8536ae15bfee1c6
sha512	2cf39e616c7b7b22b7c7322dedcfb30cd0ab5dc93ac76fbdfa1037e883ef8068fe6d6124f11fef2862c6fd653d7825305269ea90ec2e21a669710d45fe8506c1
ripemd-160	3f0c7d2a63e522daace066bff7ba6b7b1eee4051

3990 as geometric shapes

Circle

Radius = n

Diameter	7980
Circumference	25069.909375647
Area	50014469.204415

Sphere

Radius = n

Volume	266076976167.49
Surface area	200057876.81766
Circumference	25069.909375647

Square

Length = n

Perimeter	15960
Area	15920100
Diagonal	5642.7121138686

Cube

Length = n

Surface area	95520600
Volume	63521199000
Space diagonal	6910.8827221998

Equilateral Triangle

Length = n

Perimeter	11970
Area	6893605.5153943
Altitude	3455.4413610999

Triangular Pyramid

Length = n

Surface area	6893605.5153943
Volume	7486045093.6667
Height	1880.9040379562