22989 has 8 divisors (see below), whose sum is σ = 31360. Its totient is φ = 14976.

The previous prime is 22973. The next prime is 22993. The reversal of 22989 is 98922.

22989 is nontrivially palindromic in base 2.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22989 - 2⁴ = 22973 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 12 and base 16.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189 + ... + 285.

It is an arithmetic number, because the mean of its divisors is an integer number (3920).

2²²⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

22989 is a deficient number, since it is larger than the sum of its proper divisors (8371).

22989 is an equidigital number, since it uses as much as digits as its factorization.

22989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179.

The product of its digits is 2592, while the sum is 30.

The square root of 22989 is about 151.6212386178. The cubic root of 22989 is about 28.4341353746.

The spelling of 22989 in words is "twenty-two thousand, nine hundred eighty-nine".