78944164 has 24 divisors (see below), whose sum is σ = 156611840. Its totient is φ = 34517664.

The previous prime is 78944123. The next prime is 78944179. The reversal of 78944164 is 46144987.

It is a self number, because there is not a number n which added to its sum of digits gives 78944164.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38964 + ... + 40939.

Almost surely, 2^78944164 is an apocalyptic number.

It is an amenable number.

78944164 is a deficient number, since it is larger than the sum of its proper divisors (77667676).

78944164 is a wasteful number, since it uses less digits than its factorization.

78944164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79939 (or 79937 counting only the distinct ones).

The product of its digits is 193536, while the sum is 43.

The square root of 78944164 is about 8885.0528417112. The cubic root of 78944164 is about 428.9829288491.

The spelling of 78944164 in words is "seventy-eight million, nine hundred forty-four thousand, one hundred sixty-four".