79016939 has 2 divisors, whose sum is σ = 79016940. Its totient is φ = 79016938.

The previous prime is 79016921. The next prime is 79016947. The reversal of 79016939 is 93961097.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79016939 - 2⁸ = 79016683 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79016939.

It is not a weakly prime, because it can be changed into another prime (79016999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39508469 + 39508470.

It is an arithmetic number, because the mean of its divisors is an integer number (39508470).

Almost surely, 2^79016939 is an apocalyptic number.

79016939 is a deficient number, since it is larger than the sum of its proper divisors (1).

79016939 is an equidigital number, since it uses as much as digits as its factorization.

79016939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 91854, while the sum is 44.

The square root of 79016939 is about 8889.1472594395. The cubic root of 79016939 is about 429.1147082519.

The spelling of 79016939 in words is "seventy-nine million, sixteen thousand, nine hundred thirty-nine".