79900860 has 48 divisors (see below), whose sum is σ = 240934176. Its totient is φ = 19667712.

The previous prime is 79900853. The next prime is 79900879. The reversal of 79900860 is 6800997.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50439 + ... + 51998.

It is an arithmetic number, because the mean of its divisors is an integer number (5019462).

Almost surely, 2^79900860 is an apocalyptic number.

It is an amenable number.

79900860 is an abundant number, since it is smaller than the sum of its proper divisors (161033316).

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

79900860 is a wasteful number, since it uses less digits than its factorization.

79900860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102462 (or 102460 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 79900860 is about 8938.7280974421. The cubic root of 79900860 is about 430.7088722175.

The spelling of 79900860 in words is "seventy-nine million, nine hundred thousand, eight hundred sixty".