79372939 has 2 divisors, whose sum is σ = 79372940. Its totient is φ = 79372938.

The previous prime is 79372907. The next prime is 79372981. The reversal of 79372939 is 93927397.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79372939 - 2⁵ = 79372907 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79372892 and 79372901.

It is not a weakly prime, because it can be changed into another prime (79372039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39686469 + 39686470.

It is an arithmetic number, because the mean of its divisors is an integer number (39686470).

Almost surely, 2^79372939 is an apocalyptic number.

79372939 is a deficient number, since it is larger than the sum of its proper divisors (1).

79372939 is an equidigital number, since it uses as much as digits as its factorization.

79372939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 642978, while the sum is 49.

The square root of 79372939 is about 8909.1491737427. The cubic root of 79372939 is about 429.7581820447.

The spelling of 79372939 in words is "seventy-nine million, three hundred seventy-two thousand, nine hundred thirty-nine".