22439959 has 4 divisors (see below), whose sum is σ = 22588720. Its totient is φ = 22291200.

The previous prime is 22439953. The next prime is 22439971. The reversal of 22439959 is 95993422.

It is a happy number.

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 22439959 - 2⁷ = 22439831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22439953) 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, 74154 + ... + 74455.

It is an arithmetic number, because the mean of its divisors is an integer number (5647180).

Almost surely, 2^22439959 is an apocalyptic number.

22439959 is a deficient number, since it is larger than the sum of its proper divisors (148761).

22439959 is a wasteful number, since it uses less digits than its factorization.

22439959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148760.

The product of its digits is 174960, while the sum is 43.

The square root of 22439959 is about 4737.0833853754. The cubic root of 22439959 is about 282.0594705485.

It can be divided in two parts, 2243995 and 9, that added together give a square (2244004 = 1498²).

The spelling of 22439959 in words is "twenty-two million, four hundred thirty-nine thousand, nine hundred fifty-nine".