79885920 has 48 divisors (see below), whose sum is σ = 251642160. Its totient is φ = 21302784.

The previous prime is 79885901. The next prime is 79885943. The reversal of 79885920 is 2958897.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 79885920.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82735 + ... + 83694.

It is an arithmetic number, because the mean of its divisors is an integer number (5242545).

Almost surely, 2^79885920 is an apocalyptic number.

It is an amenable number.

79885920 is an abundant number, since it is smaller than the sum of its proper divisors (171756240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79885920 is a wasteful number, since it uses less digits than its factorization.

79885920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166447 (or 166439 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 48.

The square root of 79885920 is about 8937.8923690096. The cubic root of 79885920 is about 430.6820256493.

The spelling of 79885920 in words is "seventy-nine million, eight hundred eighty-five thousand, nine hundred twenty".