79818967 has 2 divisors, whose sum is σ = 79818968. Its totient is φ = 79818966.

The previous prime is 79818941. The next prime is 79818971. The reversal of 79818967 is 76981897.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79818967 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 (79818997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39909483 + 39909484.

It is an arithmetic number, because the mean of its divisors is an integer number (39909484).

Almost surely, 2^79818967 is an apocalyptic number.

79818967 is a deficient number, since it is larger than the sum of its proper divisors (1).

79818967 is an equidigital number, since it uses as much as digits as its factorization.

79818967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1524096, while the sum is 55.

The square root of 79818967 is about 8934.1461259597. The cubic root of 79818967 is about 430.5616727212.

The spelling of 79818967 in words is "seventy-nine million, eight hundred eighteen thousand, nine hundred sixty-seven".