79964879 has 2 divisors, whose sum is σ = 79964880. Its totient is φ = 79964878.

The previous prime is 79964851. The next prime is 79964891. The reversal of 79964879 is 97846997.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79964879 - 2⁸ = 79964623 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79964279) 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, 39982439 + 39982440.

It is an arithmetic number, because the mean of its divisors is an integer number (39982440).

Almost surely, 2^79964879 is an apocalyptic number.

79964879 is a deficient number, since it is larger than the sum of its proper divisors (1).

79964879 is an equidigital number, since it uses as much as digits as its factorization.

79964879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6858432, while the sum is 59.

The square root of 79964879 is about 8942.3083708850. The cubic root of 79964879 is about 430.8238738595.

The spelling of 79964879 in words is "seventy-nine million, nine hundred sixty-four thousand, eight hundred seventy-nine".