13157399 has 2 divisors, whose sum is σ = 13157400. Its totient is φ = 13157398.

The previous prime is 13157383. The next prime is 13157437. The reversal of 13157399 is 99375131.

It is an a-pointer prime, because the next prime (13157437) can be obtained adding 13157399 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13157399 - 2⁴ = 13157383 is a prime.

It is a super-3 number, since 3×13157399³ (a number of 22 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13157359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6578699 + 6578700.

It is an arithmetic number, because the mean of its divisors is an integer number (6578700).

Almost surely, 2^13157399 is an apocalyptic number.

13157399 is a deficient number, since it is larger than the sum of its proper divisors (1).

13157399 is an equidigital number, since it uses as much as digits as its factorization.

13157399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25515, while the sum is 38.

The square root of 13157399 is about 3627.3129172984. The cubic root of 13157399 is about 236.0786329470.

The spelling of 13157399 in words is "thirteen million, one hundred fifty-seven thousand, three hundred ninety-nine".