79108069 has 2 divisors, whose sum is σ = 79108070. Its totient is φ = 79108068.

The previous prime is 79108037. The next prime is 79108091. The reversal of 79108069 is 96080197.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51408900 + 27699169 = 7170^2 + 5263^2 .

It is an emirp because it is prime and its reverse (96080197) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79108069 - 2⁵ = 79108037 is a prime.

It is a super-2 number, since 2×79108069² = 12516173161817522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79108369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39554034 + 39554035.

It is an arithmetic number, because the mean of its divisors is an integer number (39554035).

Almost surely, 2^79108069 is an apocalyptic number.

It is an amenable number.

79108069 is a deficient number, since it is larger than the sum of its proper divisors (1).

79108069 is an equidigital number, since it uses as much as digits as its factorization.

79108069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 79108069 is about 8894.2716958726. The cubic root of 79108069 is about 429.2796104453.

The spelling of 79108069 in words is "seventy-nine million, one hundred eight thousand, sixty-nine".