79644231 has 12 divisors (see below), whose sum is σ = 116335440. Its totient is φ = 52499040.

The previous prime is 79644209. The next prime is 79644233. The reversal of 79644231 is 13244697.

79644231 is a `hidden beast` number, since 7 + 9 + 644 + 2 + 3 + 1 = 666.

It is not a de Polignac number, because 79644231 - 2⁵ = 79644199 is a prime.

It is a super-2 number, since 2×79644231² = 12686407063162722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79644233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48915 + ... + 50516.

It is an arithmetic number, because the mean of its divisors is an integer number (9694620).

Almost surely, 2^79644231 is an apocalyptic number.

79644231 is a deficient number, since it is larger than the sum of its proper divisors (36691209).

79644231 is a wasteful number, since it uses less digits than its factorization.

79644231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99526 (or 99523 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 79644231 is about 8924.3616578442. The cubic root of 79644231 is about 430.2472545898.

The spelling of 79644231 in words is "seventy-nine million, six hundred forty-four thousand, two hundred thirty-one".