79958115 has 12 divisors (see below), whose sum is σ = 138594144. Its totient is φ = 42644304.

The previous prime is 79958111. The next prime is 79958119. The reversal of 79958115 is 51185997.

It is an interprime number because it is at equal distance from previous prime (79958111) and next prime (79958119).

It is not a de Polignac number, because 79958115 - 2² = 79958111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1776847 = 79958115 / (7 + 9 + 9 + 5 + 8 + 1 + 1 + 5).

It is not an unprimeable number, because it can be changed into a prime (79958111) 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, 888379 + ... + 888468.

It is an arithmetic number, because the mean of its divisors is an integer number (11549512).

Almost surely, 2^79958115 is an apocalyptic number.

79958115 is a deficient number, since it is larger than the sum of its proper divisors (58636029).

79958115 is a wasteful number, since it uses less digits than its factorization.

79958115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1776858 (or 1776855 counting only the distinct ones).

The product of its digits is 113400, while the sum is 45.

The square root of 79958115 is about 8941.9301607651. The cubic root of 79958115 is about 430.8117261313.

It can be divided in two parts, 7995 and 8115, that added together give a triangular number (16110 = T₁₇₉).

The spelling of 79958115 in words is "seventy-nine million, nine hundred fifty-eight thousand, one hundred fifteen".