115157979 has 12 divisors (see below), whose sum is σ = 166509616. Its totient is φ = 76693392.

The previous prime is 115157957. The next prime is 115157981. The reversal of 115157979 is 979751511.

It is a happy number.

115157979 is a `hidden beast` number, since 1 + 1 + 5 + 1 + 579 + 79 = 666.

It is not a de Polignac number, because 115157979 - 2⁵ = 115157947 is a prime.

It is a super-2 number, since 2×115157979² = 26522720254728882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115157909) 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, 3549 + ... + 15585.

Almost surely, 2^115157979 is an apocalyptic number.

115157979 is a deficient number, since it is larger than the sum of its proper divisors (51351637).

115157979 is a wasteful number, since it uses less digits than its factorization.

115157979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13106 (or 13103 counting only the distinct ones).

The product of its digits is 99225, while the sum is 45.

The square root of 115157979 is about 10731.1685756958. The cubic root of 115157979 is about 486.5169903653.

The spelling of 115157979 in words is "one hundred fifteen million, one hundred fifty-seven thousand, nine hundred seventy-nine".