79380731 has 2 divisors, whose sum is σ = 79380732. Its totient is φ = 79380730.

The previous prime is 79380713. The next prime is 79380737. The reversal of 79380731 is 13708397.

It is a happy number.

Together with previous prime (79380713) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79380731 - 2²⁶ = 12271867 is a prime.

It is a super-2 number, since 2×79380731² = 12602600908188722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (79380737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39690365 + 39690366.

It is an arithmetic number, because the mean of its divisors is an integer number (39690366).

Almost surely, 2^79380731 is an apocalyptic number.

79380731 is a deficient number, since it is larger than the sum of its proper divisors (1).

79380731 is an equidigital number, since it uses as much as digits as its factorization.

79380731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 79380731 is about 8909.5864662733. The cubic root of 79380731 is about 429.7722446300.

The spelling of 79380731 in words is "seventy-nine million, three hundred eighty thousand, seven hundred thirty-one".