79881392 has 20 divisors (see below), whose sum is σ = 161500080. Its totient is φ = 38203968.

The previous prime is 79881379. The next prime is 79881421. The reversal of 79881392 is 29318897.

It is an unprimeable number.

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, 108167 + ... + 108902.

It is an arithmetic number, because the mean of its divisors is an integer number (8075004).

Almost surely, 2^79881392 is an apocalyptic number.

It is an amenable number.

79881392 is an abundant number, since it is smaller than the sum of its proper divisors (81618688).

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

79881392 is a wasteful number, since it uses less digits than its factorization.

79881392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217100 (or 217094 counting only the distinct ones).

The product of its digits is 217728, while the sum is 47.

The square root of 79881392 is about 8937.6390618552. The cubic root of 79881392 is about 430.6738883578.

The spelling of 79881392 in words is "seventy-nine million, eight hundred eighty-one thousand, three hundred ninety-two".