79395131 has 2 divisors, whose sum is σ = 79395132. Its totient is φ = 79395130.

The previous prime is 79395109. The next prime is 79395133. The reversal of 79395131 is 13159397.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79395131 is a prime.

It is a super-2 number, since 2×79395131² = 12607173653014322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 79395133, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (79395133) 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, 39697565 + 39697566.

It is an arithmetic number, because the mean of its divisors is an integer number (39697566).

Almost surely, 2^79395131 is an apocalyptic number.

79395131 is a deficient number, since it is larger than the sum of its proper divisors (1).

79395131 is an equidigital number, since it uses as much as digits as its factorization.

79395131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25515, while the sum is 38.

The square root of 79395131 is about 8910.3945479423. The cubic root of 79395131 is about 429.7982305591.

The spelling of 79395131 in words is "seventy-nine million, three hundred ninety-five thousand, one hundred thirty-one".