13399

13399 is a natural number in the decimal numeral system. It is the successor of 13398 and the predecessor of 13400. In mathematics, 13399 is a prime number, meaning it has exactly two distinct positive divisors: 1 and itself. It is odd, not divisible by 2, 3, 5, or any other small prime up to its square root. The sum of its digits is 25, so its digital root is 7. The prime status implies its only factorisations are trivial.

In base representations, 13399 converts to 11010001010111 in binary and to D157 in hexadecimal. Its decimal digits are 1, 3, 3, 9, 9, yielding a digit sum of 25 and digital root 7.

The number 13399 does not carry widely recognized special names or applications beyond its identification as a prime in this range. It appears in lists of primes between 13000 and 14000 and can be encountered in numeric problems or cryptographic contexts that use large primes.