79564831 has 2 divisors, whose sum is σ = 79564832. Its totient is φ = 79564830.

The previous prime is 79564789. The next prime is 79564841. The reversal of 79564831 is 13846597.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79564831 - 2¹¹ = 79562783 is a prime.

It is a super-2 number, since 2×79564831² = 12661124664117122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79564841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39782415 + 39782416.

It is an arithmetic number, because the mean of its divisors is an integer number (39782416).

Almost surely, 2^79564831 is an apocalyptic number.

79564831 is a deficient number, since it is larger than the sum of its proper divisors (1).

79564831 is an equidigital number, since it uses as much as digits as its factorization.

79564831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 43.

The square root of 79564831 is about 8919.9120511359. The cubic root of 79564831 is about 430.1042310874.

The spelling of 79564831 in words is "seventy-nine million, five hundred sixty-four thousand, eight hundred thirty-one".