22489 has 4 divisors (see below), whose sum is σ = 23056. Its totient is φ = 21924.

The previous prime is 22483. The next prime is 22501. The reversal of 22489 is 98422.

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, and also an emirpimes, since its reverse is a distinct semiprime: 98422 = 2 ⋅49211.

It is a cyclic number.

It is not a de Polignac number, because 22489 - 2³ = 22481 is a prime.

It is a d-powerful number, because it can be written as 2¹⁰ + 2¹⁴ + 4⁴ + 8⁴ + 9³ .

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (22481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219 + ... + 304.

It is an arithmetic number, because the mean of its divisors is an integer number (5764).

2²²⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

22489 is a deficient number, since it is larger than the sum of its proper divisors (567).

22489 is an equidigital number, since it uses as much as digits as its factorization.

22489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566.

The product of its digits is 1152, while the sum is 25.

The square root of 22489 is about 149.9633288508. The cubic root of 22489 is about 28.2264794959.

It can be divided in two parts, 224 and 89, that added together give a palindrome (313).

The spelling of 22489 in words is "twenty-two thousand, four hundred eighty-nine".