22249989 has 24 divisors (see below), whose sum is σ = 33515040. Its totient is φ = 14206752.

The previous prime is 22249979. The next prime is 22250017. The reversal of 22249989 is 98994222.

It is not a de Polignac number, because 22249989 - 2⁴ = 22249973 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22249949) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42282 + ... + 42804.

It is an arithmetic number, because the mean of its divisors is an integer number (1396460).

Almost surely, 2^22249989 is an apocalyptic number.

22249989 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

22249989 is a deficient number, since it is larger than the sum of its proper divisors (11265051).

22249989 is a wasteful number, since it uses less digits than its factorization.

22249989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721 (or 718 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 22249989 is about 4716.9894000305. The cubic root of 22249989 is about 281.2612700669.

The spelling of 22249989 in words is "twenty-two million, two hundred forty-nine thousand, nine hundred eighty-nine".