79398791 has 2 divisors, whose sum is σ = 79398792. Its totient is φ = 79398790.

The previous prime is 79398779. The next prime is 79398793. The reversal of 79398791 is 19789397.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79398791 - 2¹⁸ = 79136647 is a prime.

Together with 79398793, 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 (79398793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39699395 + 39699396.

It is an arithmetic number, because the mean of its divisors is an integer number (39699396).

Almost surely, 2^79398791 is an apocalyptic number.

79398791 is a deficient number, since it is larger than the sum of its proper divisors (1).

79398791 is an equidigital number, since it uses as much as digits as its factorization.

79398791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 857304, while the sum is 53.

The square root of 79398791 is about 8910.5999236864. The cubic root of 79398791 is about 429.8048348153.

The spelling of 79398791 in words is "seventy-nine million, three hundred ninety-eight thousand, seven hundred ninety-one".