79921227 has 8 divisors (see below), whose sum is σ = 107401216. Its totient is φ = 52861032.

The previous prime is 79921211. The next prime is 79921271. The reversal of 79921227 is 72212997.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 79921227 - 2⁴ = 79921211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79921207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104503 + ... + 105264.

It is an arithmetic number, because the mean of its divisors is an integer number (13425152).

Almost surely, 2^79921227 is an apocalyptic number.

79921227 is a deficient number, since it is larger than the sum of its proper divisors (27479989).

79921227 is a wasteful number, since it uses less digits than its factorization.

79921227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209897.

The product of its digits is 31752, while the sum is 39.

The square root of 79921227 is about 8939.8672808941. The cubic root of 79921227 is about 430.7454654921.

The spelling of 79921227 in words is "seventy-nine million, nine hundred twenty-one thousand, two hundred twenty-seven".