23089 has 4 divisors (see below), whose sum is σ = 25200. Its totient is φ = 20980.

The previous prime is 23087. The next prime is 23099. The reversal of 23089 is 98032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23089 - 2¹ = 23087 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

23089 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (23081) 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 3 ways as a sum of consecutive naturals, for example, 1039 + ... + 1060.

It is an arithmetic number, because the mean of its divisors is an integer number (6300).

2²³⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

23089 is a deficient number, since it is larger than the sum of its proper divisors (2111).

23089 is a wasteful number, since it uses less digits than its factorization.

23089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 23089 is about 151.9506498834. The cubic root of 23089 is about 28.4753043483.

Adding to 23089 its reverse (98032), we get a palindrome (121121).

The spelling of 23089 in words is "twenty-three thousand, eighty-nine".