79913851 has 2 divisors, whose sum is σ = 79913852. Its totient is φ = 79913850.

The previous prime is 79913849. The next prime is 79913857. The reversal of 79913851 is 15831997.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79913851 - 2¹ = 79913849 is a prime.

Together with 79913849, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 79913798 and 79913807.

It is not a weakly prime, because it can be changed into another prime (79913857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39956925 + 39956926.

It is an arithmetic number, because the mean of its divisors is an integer number (39956926).

Almost surely, 2^79913851 is an apocalyptic number.

79913851 is a deficient number, since it is larger than the sum of its proper divisors (1).

79913851 is an equidigital number, since it uses as much as digits as its factorization.

79913851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 43.

The square root of 79913851 is about 8939.4547372868. The cubic root of 79913851 is about 430.7322137924.

The spelling of 79913851 in words is "seventy-nine million, nine hundred thirteen thousand, eight hundred fifty-one".