13057399 has 12 divisors (see below), whose sum is σ = 13975344. Its totient is φ = 12176384.

The previous prime is 13057379. The next prime is 13057403. The reversal of 13057399 is 99375031.

It is not a de Polignac number, because 13057399 - 2⁵ = 13057367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13057339) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50679 + ... + 50935.

It is an arithmetic number, because the mean of its divisors is an integer number (1164612).

Almost surely, 2^13057399 is an apocalyptic number.

13057399 is a deficient number, since it is larger than the sum of its proper divisors (917945).

13057399 is an equidigital number, since it uses as much as digits as its factorization.

13057399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 25515, while the sum is 37.

The square root of 13057399 is about 3613.5023176968. The cubic root of 13057399 is about 235.4790228985.

It can be divided in two parts, 13057 and 399, that added together give a square (13456 = 116²).

The spelling of 13057399 in words is "thirteen million, fifty-seven thousand, three hundred ninety-nine".