79917256 has 16 divisors (see below), whose sum is σ = 154679040. Its totient is φ = 38669520.

The previous prime is 79917251. The next prime is 79917281. The reversal of 79917256 is 65271997.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (79917251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160876 + ... + 161371.

It is an arithmetic number, because the mean of its divisors is an integer number (9667440).

Almost surely, 2^79917256 is an apocalyptic number.

It is an amenable number.

79917256 is a deficient number, since it is larger than the sum of its proper divisors (74761784).

79917256 is a wasteful number, since it uses less digits than its factorization.

79917256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322284 (or 322280 counting only the distinct ones).

The product of its digits is 238140, while the sum is 46.

The square root of 79917256 is about 8939.6451831155. The cubic root of 79917256 is about 430.7383313066.

It can be divided in two parts, 79 and 917256, that added together give a triangular number (917335 = T₁₃₅₄).

The spelling of 79917256 in words is "seventy-nine million, nine hundred seventeen thousand, two hundred fifty-six".