872292979 has 4 divisors (see below), whose sum is σ = 872631976. Its totient is φ = 871953984.

The previous prime is 872292977. The next prime is 872293003. The reversal of 872292979 is 979292278.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 872292979 - 2¹ = 872292977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (872292977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165609 + ... + 170794.

It is an arithmetic number, because the mean of its divisors is an integer number (218157994).

Almost surely, 2^872292979 is an apocalyptic number.

872292979 is a deficient number, since it is larger than the sum of its proper divisors (338997).

872292979 is a wasteful number, since it uses less digits than its factorization.

872292979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338996.

The product of its digits is 2286144, while the sum is 55.

The square root of 872292979 is about 29534.6064642819. The cubic root of 872292979 is about 955.4782210569.

The spelling of 872292979 in words is "eight hundred seventy-two million, two hundred ninety-two thousand, nine hundred seventy-nine".