79791227 has 2 divisors, whose sum is σ = 79791228. Its totient is φ = 79791226.

The previous prime is 79791223. The next prime is 79791247. The reversal of 79791227 is 72219797.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79791227 - 2² = 79791223 is a prime.

It is not a weakly prime, because it can be changed into another prime (79791223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39895613 + 39895614.

It is an arithmetic number, because the mean of its divisors is an integer number (39895614).

Almost surely, 2^79791227 is an apocalyptic number.

79791227 is a deficient number, since it is larger than the sum of its proper divisors (1).

79791227 is an equidigital number, since it uses as much as digits as its factorization.

79791227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 111132, while the sum is 44.

The square root of 79791227 is about 8932.5935203613. The cubic root of 79791227 is about 430.5117883176.

The spelling of 79791227 in words is "seventy-nine million, seven hundred ninety-one thousand, two hundred twenty-seven".