79172715 has 24 divisors (see below), whose sum is σ = 133703568. Its totient is φ = 40000320.

The previous prime is 79172699. The next prime is 79172759. The reversal of 79172715 is 51727197.

It is not a de Polignac number, because 79172715 - 2⁴ = 79172699 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1896 + ... + 12725.

It is an arithmetic number, because the mean of its divisors is an integer number (5570982).

Almost surely, 2^79172715 is an apocalyptic number.

79172715 is a deficient number, since it is larger than the sum of its proper divisors (54530853).

79172715 is a wasteful number, since it uses less digits than its factorization.

79172715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14667 (or 14648 counting only the distinct ones).

The product of its digits is 30870, while the sum is 39.

The square root of 79172715 is about 8897.9050905255. The cubic root of 79172715 is about 429.3965123584.

The spelling of 79172715 in words is "seventy-nine million, one hundred seventy-two thousand, seven hundred fifteen".