22449 has 8 divisors (see below), whose sum is σ = 34240. Its totient is φ = 12816.

The previous prime is 22447. The next prime is 22453. The reversal of 22449 is 94422.

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

It is not a de Polignac number, because 22449 - 2¹ = 22447 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 1069 = 22449 / (2 + 2 + 4 + 4 + 9).

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 (22441) 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, 514 + ... + 555.

It is an arithmetic number, because the mean of its divisors is an integer number (4280).

2²²⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

22449 is a deficient number, since it is larger than the sum of its proper divisors (11791).

22449 is a wasteful number, since it uses less digits than its factorization.

22449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079.

The product of its digits is 576, while the sum is 21.

The square root of 22449 is about 149.8299035573. The cubic root of 22449 is about 28.2097345800.

The spelling of 22449 in words is "twenty-two thousand, four hundred forty-nine".