22904979 has 4 divisors (see below), whose sum is σ = 30539976. Its totient is φ = 15269984.

The previous prime is 22904971. The next prime is 22904989. The reversal of 22904979 is 97940922.

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 22904979 - 2³ = 22904971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22904979.

It is not an unprimeable number, because it can be changed into a prime (22904971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3817494 + ... + 3817499.

It is an arithmetic number, because the mean of its divisors is an integer number (7634994).

Almost surely, 2^22904979 is an apocalyptic number.

22904979 is a deficient number, since it is larger than the sum of its proper divisors (7634997).

22904979 is an equidigital number, since it uses as much as digits as its factorization.

22904979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7634996.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 22904979 is about 4785.9146461256. The cubic root of 22904979 is about 283.9945239637.

The spelling of 22904979 in words is "twenty-two million, nine hundred four thousand, nine hundred seventy-nine".