13279157 has 4 divisors (see below), whose sum is σ = 13978080. Its totient is φ = 12580236.

The previous prime is 13279153. The next prime is 13279163. The reversal of 13279157 is 75197231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75197231 = 19 ⋅3957749.

It is a cyclic number.

It is not a de Polignac number, because 13279157 - 2² = 13279153 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 (13279153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 349433 + ... + 349470.

It is an arithmetic number, because the mean of its divisors is an integer number (3494520).

Almost surely, 2^13279157 is an apocalyptic number.

It is an amenable number.

13279157 is a deficient number, since it is larger than the sum of its proper divisors (698923).

13279157 is an equidigital number, since it uses as much as digits as its factorization.

13279157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698922.

The product of its digits is 13230, while the sum is 35.

The square root of 13279157 is about 3644.0577657331. The cubic root of 13279157 is about 236.8046185964.

The spelling of 13279157 in words is "thirteen million, two hundred seventy-nine thousand, one hundred fifty-seven".