79393397 has 2 divisors, whose sum is σ = 79393398. Its totient is φ = 79393396.

The previous prime is 79393361. The next prime is 79393399. The reversal of 79393397 is 79339397.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75881521 + 3511876 = 8711^2 + 1874^2 .

It is a cyclic number.

It is not a de Polignac number, because 79393397 - 2⁸ = 79393141 is a prime.

It is a super-2 number, since 2×79393397² = 12606622974399218, which contains 22 as substring.

Together with 79393399, 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 (79393399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39696698 + 39696699.

It is an arithmetic number, because the mean of its divisors is an integer number (39696699).

Almost surely, 2^79393397 is an apocalyptic number.

It is an amenable number.

79393397 is a deficient number, since it is larger than the sum of its proper divisors (1).

79393397 is an equidigital number, since it uses as much as digits as its factorization.

79393397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 964467, while the sum is 50.

The square root of 79393397 is about 8910.2972453224. The cubic root of 79393397 is about 429.7951015866.

The spelling of 79393397 in words is "seventy-nine million, three hundred ninety-three thousand, three hundred ninety-seven".