22499389 has 16 divisors (see below), whose sum is σ = 25583040. Its totient is φ = 19600000.

The previous prime is 22499353. The next prime is 22499419. The reversal of 22499389 is 98399422.

It is a cyclic number.

It is not a de Polignac number, because 22499389 - 2⁹ = 22498877 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 (22499329) 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, 79929 + ... + 80209.

It is an arithmetic number, because the mean of its divisors is an integer number (1598940).

Almost surely, 2^22499389 is an apocalyptic number.

22499389 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

22499389 is a deficient number, since it is larger than the sum of its proper divisors (3083651).

22499389 is a wasteful number, since it uses less digits than its factorization.

22499389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572.

The product of its digits is 279936, while the sum is 46.

The square root of 22499389 is about 4743.3520847603. The cubic root of 22499389 is about 282.3082532056.

The spelling of 22499389 in words is "twenty-two million, four hundred ninety-nine thousand, three hundred eighty-nine".