79936459 has 2 divisors, whose sum is σ = 79936460. Its totient is φ = 79936458.

The previous prime is 79936453. The next prime is 79936471. The reversal of 79936459 is 95463997.

It is a weak prime.

It is an emirp because it is prime and its reverse (95463997) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79936459 - 2²⁵ = 46382027 is a prime.

It is not a weakly prime, because it can be changed into another prime (79936453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39968229 + 39968230.

It is an arithmetic number, because the mean of its divisors is an integer number (39968230).

Almost surely, 2^79936459 is an apocalyptic number.

79936459 is a deficient number, since it is larger than the sum of its proper divisors (1).

79936459 is an equidigital number, since it uses as much as digits as its factorization.

79936459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1837080, while the sum is 52.

The square root of 79936459 is about 8940.7191545200. The cubic root of 79936459 is about 430.7728286779.

The spelling of 79936459 in words is "seventy-nine million, nine hundred thirty-six thousand, four hundred fifty-nine".