79417957 has 2 divisors, whose sum is σ = 79417958. Its totient is φ = 79417956.

The previous prime is 79417889. The next prime is 79417963. The reversal of 79417957 is 75971497.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79103236 + 314721 = 8894^2 + 561^2 .

It is a cyclic number.

It is not a de Polignac number, because 79417957 - 2¹¹ = 79415909 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79417957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79417057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39708978 + 39708979.

It is an arithmetic number, because the mean of its divisors is an integer number (39708979).

Almost surely, 2^79417957 is an apocalyptic number.

It is an amenable number.

79417957 is a deficient number, since it is larger than the sum of its proper divisors (1).

79417957 is an equidigital number, since it uses as much as digits as its factorization.

79417957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 555660, while the sum is 49.

The square root of 79417957 is about 8911.6753194896. The cubic root of 79417957 is about 429.8394154289.

The spelling of 79417957 in words is "seventy-nine million, four hundred seventeen thousand, nine hundred fifty-seven".