22139859 has 32 divisors (see below), whose sum is σ = 35389440. Its totient is φ = 12045600.

The previous prime is 22139837. The next prime is 22139861. The reversal of 22139859 is 95893122.

It is not a de Polignac number, because 22139859 - 2¹⁶ = 22074323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22138859) 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, 45982 + ... + 46460.

It is an arithmetic number, because the mean of its divisors is an integer number (1105920).

Almost surely, 2^22139859 is an apocalyptic number.

22139859 is a deficient number, since it is larger than the sum of its proper divisors (13249581).

22139859 is a wasteful number, since it uses less digits than its factorization.

22139859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591.

The product of its digits is 38880, while the sum is 39.

The square root of 22139859 is about 4705.3011593308. The cubic root of 22139859 is about 280.7964526017.

The spelling of 22139859 in words is "twenty-two million, one hundred thirty-nine thousand, eight hundred fifty-nine".