79049778 has 16 divisors (see below), whose sum is σ = 160692096. Its totient is φ = 25917840.

The previous prime is 79049731. The next prime is 79049791. The reversal of 79049778 is 87794097.

It is a self number, because there is not a number n which added to its sum of digits gives 79049778.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107626 + ... + 108357.

It is an arithmetic number, because the mean of its divisors is an integer number (10043256).

Almost surely, 2^79049778 is an apocalyptic number.

79049778 is an abundant number, since it is smaller than the sum of its proper divisors (81642318).

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

79049778 is a wasteful number, since it uses less digits than its factorization.

79049778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216049.

The product of its (nonzero) digits is 889056, while the sum is 51.

The square root of 79049778 is about 8890.9942076238. The cubic root of 79049778 is about 429.1741459134.

The spelling of 79049778 in words is "seventy-nine million, forty-nine thousand, seven hundred seventy-eight".