79115715 has 48 divisors (see below), whose sum is σ = 164985600. Its totient is φ = 34261056.

The previous prime is 79115713. The next prime is 79115759. The reversal of 79115715 is 51751197.

79115715 is a `hidden beast` number, since 79 + 11 + 571 + 5 = 666.

It is not a de Polignac number, because 79115715 - 2¹ = 79115713 is a prime.

It is a super-2 number, since 2×79115715² = 12518592719922450, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 79115715.

It is not an unprimeable number, because it can be changed into a prime (79115713) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 625 + ... + 12594.

It is an arithmetic number, because the mean of its divisors is an integer number (3437200).

Almost surely, 2^79115715 is an apocalyptic number.

79115715 is an abundant number, since it is smaller than the sum of its proper divisors (85869885).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79115715 is a wasteful number, since it uses less digits than its factorization.

79115715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13256 (or 13253 counting only the distinct ones).

The product of its digits is 11025, while the sum is 36.

The square root of 79115715 is about 8894.7015126984. The cubic root of 79115715 is about 429.2934403289.

The spelling of 79115715 in words is "seventy-nine million, one hundred fifteen thousand, seven hundred fifteen".