79455839 has 2 divisors, whose sum is σ = 79455840. Its totient is φ = 79455838.

The previous prime is 79455833. The next prime is 79455917. The reversal of 79455839 is 93855497.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79455839 - 2⁸ = 79455583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79455833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39727919 + 39727920.

It is an arithmetic number, because the mean of its divisors is an integer number (39727920).

Almost surely, 2^79455839 is an apocalyptic number.

79455839 is a deficient number, since it is larger than the sum of its proper divisors (1).

79455839 is an equidigital number, since it uses as much as digits as its factorization.

79455839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1360800, while the sum is 50.

The square root of 79455839 is about 8913.8004801544. The cubic root of 79455839 is about 429.9077483728.

The spelling of 79455839 in words is "seventy-nine million, four hundred fifty-five thousand, eight hundred thirty-nine".