79312915 has 8 divisors (see below), whose sum is σ = 103827888. Its totient is φ = 57682080.

The previous prime is 79312913. The next prime is 79312921. The reversal of 79312915 is 51921397.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 79312915 - 2¹ = 79312913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79312913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 720972 + ... + 721081.

It is an arithmetic number, because the mean of its divisors is an integer number (12978486).

Almost surely, 2^79312915 is an apocalyptic number.

79312915 is a deficient number, since it is larger than the sum of its proper divisors (24514973).

79312915 is a wasteful number, since it uses less digits than its factorization.

79312915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1442069.

The product of its digits is 17010, while the sum is 37.

The square root of 79312915 is about 8905.7798647844. The cubic root of 79312915 is about 429.6498230722.

The spelling of 79312915 in words is "seventy-nine million, three hundred twelve thousand, nine hundred fifteen".