79478964 has 36 divisors (see below), whose sum is σ = 205581376. Its totient is φ = 25876368.

The previous prime is 79478941. The next prime is 79478989. The reversal of 79478964 is 46987497.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 79478964.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24124 + ... + 27219.

Almost surely, 2^79478964 is an apocalyptic number.

It is an amenable number.

79478964 is an abundant number, since it is smaller than the sum of its proper divisors (126102412).

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

79478964 is a wasteful number, since it uses less digits than its factorization.

79478964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51396 (or 51391 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The square root of 79478964 is about 8915.0975317155. The cubic root of 79478964 is about 429.9494514223.

The spelling of 79478964 in words is "seventy-nine million, four hundred seventy-eight thousand, nine hundred sixty-four".