22921479 has 12 divisors (see below), whose sum is σ = 37838736. Its totient is φ = 13097952.

The previous prime is 22921471. The next prime is 22921511. The reversal of 22921479 is 97412922.

It is not a de Polignac number, because 22921479 - 2³ = 22921471 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22921471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 181854 + ... + 181979.

It is an arithmetic number, because the mean of its divisors is an integer number (3153228).

Almost surely, 2^22921479 is an apocalyptic number.

22921479 is a deficient number, since it is larger than the sum of its proper divisors (14917257).

22921479 is a wasteful number, since it uses less digits than its factorization.

22921479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363846 (or 363843 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 22921479 is about 4787.6381442210. The cubic root of 22921479 is about 284.0627010604.

The spelling of 22921479 in words is "twenty-two million, nine hundred twenty-one thousand, four hundred seventy-nine".