79516469 has 2 divisors, whose sum is σ = 79516470. Its totient is φ = 79516468.

The previous prime is 79516447. The next prime is 79516487. The reversal of 79516469 is 96461597.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70140625 + 9375844 = 8375^2 + 3062^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79516469 is a prime.

It is a super-2 number, since 2×79516469² = 12645737684455922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79516439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39758234 + 39758235.

It is an arithmetic number, because the mean of its divisors is an integer number (39758235).

Almost surely, 2^79516469 is an apocalyptic number.

It is an amenable number.

79516469 is a deficient number, since it is larger than the sum of its proper divisors (1).

79516469 is an equidigital number, since it uses as much as digits as its factorization.

79516469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 47.

The square root of 79516469 is about 8917.2007378998. The cubic root of 79516469 is about 430.0170698109.

The spelling of 79516469 in words is "seventy-nine million, five hundred sixteen thousand, four hundred sixty-nine".