79179904 has 16 divisors (see below), whose sum is σ = 157741470. Its totient is φ = 39589888.

The previous prime is 79179871. The next prime is 79179907. The reversal of 79179904 is 40997197.

It can be written as a sum of positive squares in only one way, i.e., 69889600 + 9290304 = 8360^2 + 3048^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79179907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309169 + ... + 309424.

Almost surely, 2^79179904 is an apocalyptic number.

It is an amenable number.

79179904 is a deficient number, since it is larger than the sum of its proper divisors (78561566).

79179904 is an equidigital number, since it uses as much as digits as its factorization.

79179904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618607 (or 618595 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 46.

The square root of 79179904 is about 8898.3090528482. The cubic root of 79179904 is about 429.4095085786.

The spelling of 79179904 in words is "seventy-nine million, one hundred seventy-nine thousand, nine hundred four".