79389664 has 12 divisors (see below), whose sum is σ = 156298464. Its totient is φ = 39694816.

The previous prime is 79389659. The next prime is 79389689. The reversal of 79389664 is 46698397.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1240432 + ... + 1240495.

It is an arithmetic number, because the mean of its divisors is an integer number (13024872).

Almost surely, 2^79389664 is an apocalyptic number.

It is an amenable number.

79389664 is a deficient number, since it is larger than the sum of its proper divisors (76908800).

79389664 is a wasteful number, since it uses less digits than its factorization.

79389664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2480937 (or 2480929 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 52.

The square root of 79389664 is about 8910.0877661222. The cubic root of 79389664 is about 429.7883652990.

The spelling of 79389664 in words is "seventy-nine million, three hundred eighty-nine thousand, six hundred sixty-four".