79189965 has 24 divisors (see below), whose sum is σ = 141692928. Its totient is φ = 40871520.

The previous prime is 79189931. The next prime is 79189991. The reversal of 79189965 is 56998197.

It is not a de Polignac number, because 79189965 - 2⁸ = 79189709 is a prime.

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, 26989 + ... + 29778.

It is an arithmetic number, because the mean of its divisors is an integer number (5903872).

Almost surely, 2^79189965 is an apocalyptic number.

It is an amenable number.

79189965 is a deficient number, since it is larger than the sum of its proper divisors (62502963).

79189965 is a wasteful number, since it uses less digits than its factorization.

79189965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56809 (or 56806 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 54.

The square root of 79189965 is about 8898.8743670197. The cubic root of 79189965 is about 429.4276954580.

The spelling of 79189965 in words is "seventy-nine million, one hundred eighty-nine thousand, nine hundred sixty-five".