22279239 has 16 divisors (see below), whose sum is σ = 33631200. Its totient is φ = 14571648.

The previous prime is 22279199. The next prime is 22279247. The reversal of 22279239 is 93297222.

It is a happy number.

It is not a de Polignac number, because 22279239 - 2⁸ = 22278983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22279139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6354 + ... + 9215.

It is an arithmetic number, because the mean of its divisors is an integer number (2101950).

Almost surely, 2^22279239 is an apocalyptic number.

22279239 is a deficient number, since it is larger than the sum of its proper divisors (11351961).

22279239 is a wasteful number, since it uses less digits than its factorization.

22279239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15631 (or 15625 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 22279239 is about 4720.0888762819. The cubic root of 22279239 is about 281.3844654797.

The spelling of 22279239 in words is "twenty-two million, two hundred seventy-nine thousand, two hundred thirty-nine".