72792931 has 2 divisors, whose sum is σ = 72792932. Its totient is φ = 72792930.

The previous prime is 72792913. The next prime is 72792959. The reversal of 72792931 is 13929727.

Together with previous prime (72792913) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72792931 - 2⁷ = 72792803 is a prime.

It is a super-2 number, since 2×72792931² = 10597621607141522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72742931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36396465 + 36396466.

It is an arithmetic number, because the mean of its divisors is an integer number (36396466).

Almost surely, 2^72792931 is an apocalyptic number.

72792931 is a deficient number, since it is larger than the sum of its proper divisors (1).

72792931 is an equidigital number, since it uses as much as digits as its factorization.

72792931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47628, while the sum is 40.

The square root of 72792931 is about 8531.8773432346. The cubic root of 72792931 is about 417.5383803028.

The spelling of 72792931 in words is "seventy-two million, seven hundred ninety-two thousand, nine hundred thirty-one".