Math question: What is the sum of the digits of the number 3985?

To find the sum of the digits, we add each digit individually. In this case, 3 + 9 + 8 + 5 equals 25. Therefore, the sum of the digits of the number 3985 is 25.

Question: If 3985 is multiplied by the sum of its digits, what is the resulting product?

The sum of the digits in 3985 is 3 + 9 + 8 + 5 = 25. Thus, multiplying 3985 by 25 gives us 99,625.

Math question: If the number 3985 is divided by 5 and then multiplied by 3, what is the result?

To solve this, we divide 3985 by 5, which gives us 797. We then multiply 797 by 3, which results in 2391. Therefore, when the number 3985 is divided by 5 and multiplied by 3, the answer is 2391.

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

3985 (number)

3985 is an odd 4-digits composite number following 3984 and preceding 3986. In scientific notation, it is written as 3.985 × 10^3. The sum of its digits is 25. It has a total of 2 prime factors and 4 positive divisors. There are 3184 positive integers (up to 3985) that are relatively prime to 3985.

Interesting facts

3985 has 4 divisors, whose sum is 4788
The reverse of 3985 is 5893
Previous prime number is 5

Basic properties

Is Prime? no
Number parity odd
Number length 4
Sum of Digits 25
Digital Root 7

Name

Name	three thousand nine hundred eighty-five

Notation

Scientific notation	3.985 × 10^3
Engineering notation	3.985 × 10^3

Prime Factorization of 3985

Prime Factorization 5 × 797

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	3985	Product of the distinct prime numbers

The prime factorization of 3985 is 5 × 797. Since it has a total of 2 prime factors.

Most popular turbo-numbers

8, 5, 86, 12, 21, 244, 4832, 6426, 16069, 32315, 459118, 929243, 1032164, 4254842, 29082094, 38690709, 765822076, 280164210, 2892437829, 9577449530

Basic calculations (n = 3985)

Multiplication

n×y

n×2	7970
n×3	11955
n×4	15940
n×5	19925

Division

n÷y

n÷2	1992.5
n÷3	1328.3333333333
n÷3	996.25
n÷5	797

Exponentiation

n^y

n²	15880225
n³	63282696625
n⁴	252181546050625
n⁵	1004943461011740625

Nth Root

^y√n

²√n	63.126856408347
³√n	15.854143151588
⁴√n	7.9452411170679
⁵√n	5.2491098940816

Divisors of 3985

1, 5, 797, 3985

4 divisors

τ	Total Divisors	4	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-3984	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.25	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	4	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 3985 can be divided by 4 positive divisors. The sum of these divisors (counting 3985) is 1, the average is 0.25.

Base conversion 3985

Base	System	Value
2	Binary	111110010001
3	Ternary	12110121
4	Quaternary	332101
5	Quinary	111420
6	Senary	30241
8	Octal	7621
10	Decimal	3985
12	Duodecimal	2381
16	Hexadecimal	f91
20	Vigesimal	9j5
36	Base36	32p

Cryptographic Hash Functions

md5	0c2f66f43752d47fb49abeea0badf47a
sha1	368edffd96efae2d584ef15a15b4d0a377458419
sha256	b4e332c8047ed1034b9fb7f8949ea346b05462404754ebbbf6a9d3902caa4483
sha512	f087f7f3495ee3456c5084ba51d7f1d5a0530c0558008a5e58e1b2d2b46b58756196c7aae961a5506e443a4e7db6c4b158762de9853f7124dc147ddca7a89d1e
ripemd-160	52826b865123de879764d2a6e42cdc3cf9c49d74

3985 as geometric shapes

Circle

Radius = n

Diameter	7970
Circumference	25038.493449111
Area	49889198.197353

Sphere

Radius = n

Volume	265077939755.27
Surface area	199556792.78941
Circumference	25038.493449111

Square

Length = n

Perimeter	15940
Area	15880225
Diagonal	5635.6410460568

Cube

Length = n

Surface area	95281350
Volume	63282696625
Space diagonal	6902.222468162

Equilateral Triangle

Length = n

Perimeter	11955
Area	6876339.1339064
Altitude	3451.111234081

Triangular Pyramid

Length = n

Surface area	6876339.1339064
Volume	7457937319.2181
Height	1878.5470153523