79916897 has 2 divisors, whose sum is σ = 79916898. Its totient is φ = 79916896.

The previous prime is 79916867. The next prime is 79916933. The reversal of 79916897 is 79861997.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65545216 + 14371681 = 8096^2 + 3791^2 .

It is a cyclic number.

It is not a de Polignac number, because 79916897 - 2¹⁰ = 79915873 is a prime.

It is a super-2 number, since 2×79916897² = 12773420852217218, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (79916827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39958448 + 39958449.

It is an arithmetic number, because the mean of its divisors is an integer number (39958449).

Almost surely, 2^79916897 is an apocalyptic number.

It is an amenable number.

79916897 is a deficient number, since it is larger than the sum of its proper divisors (1).

79916897 is an equidigital number, since it uses as much as digits as its factorization.

79916897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1714608, while the sum is 56.

The square root of 79916897 is about 8939.6251039963. The cubic root of 79916897 is about 430.7376863258.

The spelling of 79916897 in words is "seventy-nine million, nine hundred sixteen thousand, eight hundred ninety-seven".