79039879 has 2 divisors, whose sum is σ = 79039880. Its totient is φ = 79039878.

The previous prime is 79039861. The next prime is 79039889. The reversal of 79039879 is 97893097.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79039879 - 2²³ = 70651271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79039889) 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, 39519939 + 39519940.

It is an arithmetic number, because the mean of its divisors is an integer number (39519940).

Almost surely, 2^79039879 is an apocalyptic number.

79039879 is a deficient number, since it is larger than the sum of its proper divisors (1).

79039879 is an equidigital number, since it uses as much as digits as its factorization.

79039879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 857304, while the sum is 52.

The square root of 79039879 is about 8890.4375032953. The cubic root of 79039879 is about 429.1562307367.

The spelling of 79039879 in words is "seventy-nine million, thirty-nine thousand, eight hundred seventy-nine".