22444989 has 24 divisors (see below), whose sum is σ = 35048160. Its totient is φ = 12739104.

The previous prime is 22444963. The next prime is 22444993. The reversal of 22444989 is 98944422.

It is not a de Polignac number, because 22444989 - 2⁷ = 22444861 is a prime.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 22444989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22444189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25887 + ... + 26739.

It is an arithmetic number, because the mean of its divisors is an integer number (1460340).

Almost surely, 2^22444989 is an apocalyptic number.

It is an amenable number.

22444989 is a deficient number, since it is larger than the sum of its proper divisors (12603171).

22444989 is a wasteful number, since it uses less digits than its factorization.

22444989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049 (or 1042 counting only the distinct ones).

The product of its digits is 165888, while the sum is 42.

The square root of 22444989 is about 4737.6142730281. The cubic root of 22444989 is about 282.0805438660.

The spelling of 22444989 in words is "twenty-two million, four hundred forty-four thousand, nine hundred eighty-nine".