Math question: What is the remainder when 399 is divided by the sum of its digits?

To find the remainder, we need to calculate the sum of the digits in 399, which is 3 + 9 + 9 = 21. Dividing 399 by 21 yields a quotient of 19 with a remainder of 0. Therefore, when 399 is divided by the sum of its digits, the remainder is 0. This means that 399 is divisible by 21.

Math question: What is the sum of all the digits in the number 399?

To find the sum of the digits in the number 399, we add each digit individually. Adding 3 + 9 + 9 equals 21. Therefore, the sum of the digits in the number 399 is 21.

Math question: If the number 399 is multiplied by 7 and then divided by 99, what is the result?

To find the result, we multiply 399 by 7, which gives us 2793. Then, we divide 2793 by 99, resulting in 28.272727... (repeating). Hence, the answer is approximately 28.272727...

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

399 (number)

399 is an odd 3-digits composite number following 398 and preceding 400. In scientific notation, it is written as 3.99 × 10^2. The sum of its digits is 21. It has a total of 3 prime factors and 8 positive divisors. There are 216 positive integers (up to 399) that are relatively prime to 399.

Interesting facts

399 has 8 divisors, whose sum is 640
The reverse of 399 is 993
Previous prime number is 19

Basic properties

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

Name

Name	three hundred ninety-nine

Notation

Scientific notation	3.99 × 10^2
Engineering notation	3.99 × 10^0

Prime Factorization of 399

Prime Factorization 3 × 19 × 7

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	399	Product of the distinct prime numbers

The prime factorization of 399 is 3 × 19 × 7. Since it has a total of 3 prime factors.

Most popular turbo-numbers

1, 2, 22, 9, 738, 829, 7097, 5696, 75529, 4892, 618030, 554869, 9071912, 8546520, 32349553, 4445782, 540734657, 988137886, 826189940, 1856982345

Basic calculations (n = 399)

Multiplication

n×y

n×2	798
n×3	1197
n×4	1596
n×5	1995

Division

n÷y

n÷2	199.5
n÷3	133
n÷3	99.75
n÷5	79.8

Exponentiation

n^y

n²	159201
n³	63521199
n⁴	25344958401
n⁵	10112638401999

Nth Root

^y√n

²√n	19.974984355438
³√n	7.3619178209542
⁴√n	4.4693382458076
⁵√n	3.3127951306141

Divisors of 399

1, 3, 7, 19, 21, 57, 133, 399

8 divisors

τ	Total Divisors	8	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-398	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.125	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	8	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 399 can be divided by 8 positive divisors. The sum of these divisors (counting 399) is 1, the average is 0.125.

Base conversion 399

Base	System	Value
2	Binary	110001111
3	Ternary	112210
4	Quaternary	12033
5	Quinary	3044
6	Senary	1503
8	Octal	617
10	Decimal	399
12	Duodecimal	293
16	Hexadecimal	18f
20	Vigesimal	jj
36	Base36	b3

Cryptographic Hash Functions

md5	352fe25daf686bdb4edca223c921acea
sha1	9ed4f29f8b6857ffe123d6e41d5c699edc0d62a1
sha256	0f78540965a86402578f8188c826c1cb6c7ddcb608ae3a3201e532c7cacb6ce3
sha512	289c89c1dee59a6fba00572c0f12912258513102334f87926069a0dd90622b556c31d2f349ac7cc0f4f06859f64ef5051ffdc7de602ca3d46ddc3c805ee9e4d6
ripemd-160	93273be83c44cd68138bf0cf84a12ea35b09fb75

399 as geometric shapes

Circle

Radius = n

Diameter	798
Circumference	2506.9909375647
Area	500144.69204415

Sphere

Radius = n

Volume	266076976.16749
Surface area	2000578.7681766
Circumference	2506.9909375647

Square

Length = n

Perimeter	1596
Area	159201
Diagonal	564.27121138686

Cube

Length = n

Surface area	955206
Volume	63521199
Space diagonal	691.08827221998

Equilateral Triangle

Length = n

Perimeter	1197
Area	68936.055153943
Altitude	345.54413610999

Triangular Pyramid

Length = n

Surface area	68936.055153943
Volume	7486045.0936667
Height	188.09040379562