79320931 has 2 divisors, whose sum is σ = 79320932. Its totient is φ = 79320930.

The previous prime is 79320907. The next prime is 79320947. The reversal of 79320931 is 13902397.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79320931 - 2²¹ = 77223779 is a prime.

It is a super-4 number, since 4×79320931⁴ (a number of 33 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (79323931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39660465 + 39660466.

It is an arithmetic number, because the mean of its divisors is an integer number (39660466).

Almost surely, 2^79320931 is an apocalyptic number.

79320931 is a deficient number, since it is larger than the sum of its proper divisors (1).

79320931 is an equidigital number, since it uses as much as digits as its factorization.

79320931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 79320931 is about 8906.2298982229. The cubic root of 79320931 is about 429.6642972048.

The spelling of 79320931 in words is "seventy-nine million, three hundred twenty thousand, nine hundred thirty-one".