22089 has 8 divisors (see below), whose sum is σ = 30400. Its totient is φ = 14256.

The previous prime is 22079. The next prime is 22091. The reversal of 22089 is 98022.

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

It is not a de Polignac number, because 22089 - 2⁴ = 22073 is a prime.

It is a super-3 number, since 3×22089³ = 32333254472907, which contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (22039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12 + ... + 210.

It is an arithmetic number, because the mean of its divisors is an integer number (3800).

2²²⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

22089 is a deficient number, since it is larger than the sum of its proper divisors (8311).

22089 is a wasteful number, since it uses less digits than its factorization.

22089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 22089 is about 148.6236858647. The cubic root of 22089 is about 28.0581275440.

The spelling of 22089 in words is "twenty-two thousand, eighty-nine".