79649599 has 2 divisors, whose sum is σ = 79649600. Its totient is φ = 79649598.

The previous prime is 79649561. The next prime is 79649627. The reversal of 79649599 is 99594697.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79649599 - 2²⁵ = 46095167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79649699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39824799 + 39824800.

It is an arithmetic number, because the mean of its divisors is an integer number (39824800).

Almost surely, 2^79649599 is an apocalyptic number.

79649599 is a deficient number, since it is larger than the sum of its proper divisors (1).

79649599 is an equidigital number, since it uses as much as digits as its factorization.

79649599 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5511240, while the sum is 58.

The square root of 79649599 is about 8924.6624025786. The cubic root of 79649599 is about 430.2569205562.

The spelling of 79649599 in words is "seventy-nine million, six hundred forty-nine thousand, five hundred ninety-nine".