79457699 has 2 divisors, whose sum is σ = 79457700. Its totient is φ = 79457698.

The previous prime is 79457641. The next prime is 79457771. The reversal of 79457699 is 99675497.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79457699 - 2²⁴ = 62680483 is a prime.

It is not a weakly prime, because it can be changed into another prime (79457629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39728849 + 39728850.

It is an arithmetic number, because the mean of its divisors is an integer number (39728850).

Almost surely, 2^79457699 is an apocalyptic number.

79457699 is a deficient number, since it is larger than the sum of its proper divisors (1).

79457699 is an equidigital number, since it uses as much as digits as its factorization.

79457699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4286520, while the sum is 56.

The square root of 79457699 is about 8913.9048121460. The cubic root of 79457699 is about 429.9111029498.

The spelling of 79457699 in words is "seventy-nine million, four hundred fifty-seven thousand, six hundred ninety-nine".