84979172 has 12 divisors (see below), whose sum is σ = 156540720. Its totient is φ = 40253256.

The previous prime is 84979163. The next prime is 84979189. The reversal of 84979172 is 27197948.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 558998 + ... + 559149.

It is an arithmetic number, because the mean of its divisors is an integer number (13045060).

Almost surely, 2^84979172 is an apocalyptic number.

It is an amenable number.

84979172 is a deficient number, since it is larger than the sum of its proper divisors (71561548).

84979172 is a wasteful number, since it uses less digits than its factorization.

84979172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118170 (or 1118168 counting only the distinct ones).

The product of its digits is 254016, while the sum is 47.

The square root of 84979172 is about 9218.4148311952. The cubic root of 84979172 is about 439.6470516671.

The spelling of 84979172 in words is "eighty-four million, nine hundred seventy-nine thousand, one hundred seventy-two".