13157939 has 8 divisors (see below), whose sum is σ = 13461120. Its totient is φ = 12856896.

The previous prime is 13157927. The next prime is 13157951. The reversal of 13157939 is 93975131.

It is an interprime number because it is at equal distance from previous prime (13157927) and next prime (13157951).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13157939 - 2⁴ = 13157923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13157959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21374 + ... + 21980.

It is an arithmetic number, because the mean of its divisors is an integer number (1682640).

Almost surely, 2^13157939 is an apocalyptic number.

13157939 is a deficient number, since it is larger than the sum of its proper divisors (303181).

13157939 is an equidigital number, since it uses as much as digits as its factorization.

13157939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069.

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

The square root of 13157939 is about 3627.3873518002. The cubic root of 13157939 is about 236.0818625802.

The spelling of 13157939 in words is "thirteen million, one hundred fifty-seven thousand, nine hundred thirty-nine".