22979407 has 4 divisors (see below), whose sum is σ = 25068456. Its totient is φ = 20890360.

The previous prime is 22979387. The next prime is 22979413. The reversal of 22979407 is 70497922.

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 22979407 - 2⁷ = 22979279 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22979407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22979447) 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, 1044508 + ... + 1044529.

It is an arithmetic number, because the mean of its divisors is an integer number (6267114).

Almost surely, 2^22979407 is an apocalyptic number.

22979407 is a deficient number, since it is larger than the sum of its proper divisors (2089049).

22979407 is a wasteful number, since it uses less digits than its factorization.

22979407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2089048.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 22979407 is about 4793.6840738622. The cubic root of 22979407 is about 284.3017976377.

The spelling of 22979407 in words is "twenty-two million, nine hundred seventy-nine thousand, four hundred seven".