79849751 has 2 divisors, whose sum is σ = 79849752. Its totient is φ = 79849750.

The previous prime is 79849739. The next prime is 79849771. The reversal of 79849751 is 15794897.

It is a weak prime.

It is an emirp because it is prime and its reverse (15794897) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79849751 - 2⁶ = 79849687 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79849751.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79849771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39924875 + 39924876.

It is an arithmetic number, because the mean of its divisors is an integer number (39924876).

Almost surely, 2^79849751 is an apocalyptic number.

79849751 is a deficient number, since it is larger than the sum of its proper divisors (1).

79849751 is an equidigital number, since it uses as much as digits as its factorization.

79849751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 50.

The square root of 79849751 is about 8935.8687882041. The cubic root of 79849751 is about 430.6170175740.

The spelling of 79849751 in words is "seventy-nine million, eight hundred forty-nine thousand, seven hundred fifty-one".