79117693 has 2 divisors, whose sum is σ = 79117694. Its totient is φ = 79117692.

The previous prime is 79117681. The next prime is 79117747. The reversal of 79117693 is 39671197.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51523684 + 27594009 = 7178^2 + 5253^2 .

It is a cyclic number.

It is not a de Polignac number, because 79117693 - 2²⁵ = 45563261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79117603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39558846 + 39558847.

It is an arithmetic number, because the mean of its divisors is an integer number (39558847).

Almost surely, 2^79117693 is an apocalyptic number.

It is an amenable number.

79117693 is a deficient number, since it is larger than the sum of its proper divisors (1).

79117693 is an equidigital number, since it uses as much as digits as its factorization.

79117693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 71442, while the sum is 43.

The square root of 79117693 is about 8894.8127017942. The cubic root of 79117693 is about 429.2970179382.

The spelling of 79117693 in words is "seventy-nine million, one hundred seventeen thousand, six hundred ninety-three".