79171864 has 24 divisors (see below), whose sum is σ = 151059060. Its totient is φ = 38901296.

The previous prime is 79171853. The next prime is 79171891. The reversal of 79171864 is 46817197.

It is a self number, because there is not a number n which added to its sum of digits gives 79171864.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26427 + ... + 29269.

Almost surely, 2^79171864 is an apocalyptic number.

It is an amenable number.

79171864 is a deficient number, since it is larger than the sum of its proper divisors (71887196).

79171864 is a wasteful number, since it uses less digits than its factorization.

79171864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2967 (or 2904 counting only the distinct ones).

The product of its digits is 84672, while the sum is 43.

The square root of 79171864 is about 8897.8572701522. The cubic root of 79171864 is about 429.3949738750.

The spelling of 79171864 in words is "seventy-nine million, one hundred seventy-one thousand, eight hundred sixty-four".