79187904 has 84 divisors (see below), whose sum is σ = 240359184. Its totient is φ = 24840192.

The previous prime is 79187879. The next prime is 79187917. The reversal of 79187904 is 40978197.

It is a self number, because there is not a number n which added to its sum of digits gives 79187904.

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, 5749 + ... + 13835.

Almost surely, 2^79187904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79187904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120179592).

79187904 is an abundant number, since it is smaller than the sum of its proper divisors (161171280).

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

79187904 is a wasteful number, since it uses less digits than its factorization.

79187904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8122 (or 8109 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 79187904 is about 8898.7585651033. The cubic root of 79187904 is about 429.4239699937.

The spelling of 79187904 in words is "seventy-nine million, one hundred eighty-seven thousand, nine hundred four".