79216971 has 8 divisors (see below), whose sum is σ = 106076880. Its totient is φ = 52584192.

The previous prime is 79216939. The next prime is 79217011. The reversal of 79216971 is 17961297.

It is a happy number.

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

It is not a de Polignac number, because 79216971 - 2⁵ = 79216939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79216771) 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, 55966 + ... + 57363.

It is an arithmetic number, because the mean of its divisors is an integer number (13259610).

Almost surely, 2^79216971 is an apocalyptic number.

79216971 is a deficient number, since it is larger than the sum of its proper divisors (26859909).

79216971 is a wasteful number, since it uses less digits than its factorization.

79216971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113565.

The product of its digits is 47628, while the sum is 42.

The square root of 79216971 is about 8900.3916205974. The cubic root of 79216971 is about 429.4765055409.

The spelling of 79216971 in words is "seventy-nine million, two hundred sixteen thousand, nine hundred seventy-one".