79365589 has 2 divisors, whose sum is σ = 79365590. Its totient is φ = 79365588.

The previous prime is 79365569. The next prime is 79365593. The reversal of 79365589 is 98556397.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79299025 + 66564 = 8905^2 + 258^2 .

It is a cyclic number.

It is not a de Polignac number, because 79365589 - 2²³ = 70976981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79365569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39682794 + 39682795.

It is an arithmetic number, because the mean of its divisors is an integer number (39682795).

Almost surely, 2^79365589 is an apocalyptic number.

It is an amenable number.

79365589 is a deficient number, since it is larger than the sum of its proper divisors (1).

79365589 is an equidigital number, since it uses as much as digits as its factorization.

79365589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2041200, while the sum is 52.

The square root of 79365589 is about 8908.7366668905. The cubic root of 79365589 is about 429.7449163138.

The spelling of 79365589 in words is "seventy-nine million, three hundred sixty-five thousand, five hundred eighty-nine".