79397864927 has 2 divisors, whose sum is σ = 79397864928. Its totient is φ = 79397864926.

The previous prime is 79397864873. The next prime is 79397864929. The reversal of 79397864927 is 72946879397.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79397864927 - 2¹⁰ = 79397863903 is a prime.

It is a super-2 number, since 2×79397864927² (a number of 23 digits) contains 22 as substring.

Together with 79397864929, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79397864929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39698932463 + 39698932464.

It is an arithmetic number, because the mean of its divisors is an integer number (39698932464).

Almost surely, 2^79397864927 is an apocalyptic number.

79397864927 is a deficient number, since it is larger than the sum of its proper divisors (1).

79397864927 is an equidigital number, since it uses as much as digits as its factorization.

79397864927 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288054144, while the sum is 71.

The spelling of 79397864927 in words is "seventy-nine billion, three hundred ninety-seven million, eight hundred sixty-four thousand, nine hundred twenty-seven".