22399559 has 16 divisors (see below), whose sum is σ = 27793920. Its totient is φ = 17578080.

The previous prime is 22399547. The next prime is 22399561. The reversal of 22399559 is 95599322.

It is a happy number.

It is not a de Polignac number, because 22399559 - 2⁸ = 22399303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22399579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10982 + ... + 12860.

It is an arithmetic number, because the mean of its divisors is an integer number (1737120).

Almost surely, 2^22399559 is an apocalyptic number.

22399559 is a deficient number, since it is larger than the sum of its proper divisors (5394361).

22399559 is a wasteful number, since it uses less digits than its factorization.

22399559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2030.

The product of its digits is 218700, while the sum is 44.

The square root of 22399559 is about 4732.8172371221. The cubic root of 22399559 is about 281.8900993545.

The spelling of 22399559 in words is "twenty-two million, three hundred ninety-nine thousand, five hundred fifty-nine".