22479639 has 32 divisors (see below), whose sum is σ = 37470720. Its totient is φ = 11670912.

The previous prime is 22479629. The next prime is 22479643. The reversal of 22479639 is 93697422.

It is a happy number.

It is not a de Polignac number, because 22479639 - 2⁸ = 22479383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22479639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22479629) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17677 + ... + 18905.

It is an arithmetic number, because the mean of its divisors is an integer number (1170960).

Almost surely, 2^22479639 is an apocalyptic number.

22479639 is a deficient number, since it is larger than the sum of its proper divisors (14991081).

22479639 is a wasteful number, since it uses less digits than its factorization.

22479639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319.

The product of its digits is 163296, while the sum is 42.

The square root of 22479639 is about 4741.2697666343. The cubic root of 22479639 is about 282.2256254771.

The spelling of 22479639 in words is "twenty-two million, four hundred seventy-nine thousand, six hundred thirty-nine".