399
Number 399 properties
- 399 is an odd number.
- 399 is a Harshad number, which means it is divisible by the sum of its digits (399 = 21, and 399 is divisible by 21).
Number 399 - properties and curiosities
399 (number)
Prime factorization
Prime factorization of 399: 3 × 7 × 19.
Divisors
Divisor count: 8
1, 3, 7, 19, 21, 57, 133, 399
Factors of 399 are: 1, 3, 7, 19, 21, 57, 133, 399.
Representations
In octal, 399 is represented as 617.
In binary, 399 is represented as 110001111.
In hex, 399 is represented as 18F.
Roman numeral: CCCXCIX
Curiosities
- 399 is divisible by the sum of its digits.
Related numbers
Quick answers
Is 399 prime?
No, 399 is not prime.
What are the factors of 399?
1, 3, 7, 19, 21, 57, 133, 399
What is 399 in binary?
110001111