79944615 has 24 divisors (see below), whose sum is σ = 138802560. Its totient is φ = 42565824.

The previous prime is 79944607. The next prime is 79944637. The reversal of 79944615 is 51644997.

It is not a de Polignac number, because 79944615 - 2³ = 79944607 is a prime.

It is a super-2 number, since 2×79944615² = 12782282934996450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36234 + ... + 38376.

It is an arithmetic number, because the mean of its divisors is an integer number (5783440).

Almost surely, 2^79944615 is an apocalyptic number.

79944615 is a deficient number, since it is larger than the sum of its proper divisors (58857945).

79944615 is a wasteful number, since it uses less digits than its factorization.

79944615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2983 (or 2980 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 79944615 is about 8941.1752583204. The cubic root of 79944615 is about 430.7874789128.

The spelling of 79944615 in words is "seventy-nine million, nine hundred forty-four thousand, six hundred fifteen".