79979444 has 6 divisors (see below), whose sum is σ = 139964034. Its totient is φ = 39989720.

The previous prime is 79979437. The next prime is 79979447. The reversal of 79979444 is 44497997.

It can be written as a sum of positive squares in only one way, i.e., 65448100 + 14531344 = 8090^2 + 3812^2 .

It is a super-2 number, since 2×79979444² = 12793422925098272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79979447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9997427 + ... + 9997434.

It is an arithmetic number, because the mean of its divisors is an integer number (23327339).

Almost surely, 2^79979444 is an apocalyptic number.

It is an amenable number.

79979444 is a deficient number, since it is larger than the sum of its proper divisors (59984590).

79979444 is a wasteful number, since it uses less digits than its factorization.

79979444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19994865 (or 19994863 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 53.

The square root of 79979444 is about 8943.1227208397. The cubic root of 79979444 is about 430.8500293787.

The spelling of 79979444 in words is "seventy-nine million, nine hundred seventy-nine thousand, four hundred forty-four".