22442289 has 4 divisors (see below), whose sum is σ = 29923056. Its totient is φ = 14961524.

The previous prime is 22442281. The next prime is 22442311. The reversal of 22442289 is 98224422.

It is a happy number.

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 22442289 - 2³ = 22442281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22442281) 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, 3740379 + ... + 3740384.

It is an arithmetic number, because the mean of its divisors is an integer number (7480764).

Almost surely, 2^22442289 is an apocalyptic number.

It is an amenable number.

22442289 is a deficient number, since it is larger than the sum of its proper divisors (7480767).

22442289 is an equidigital number, since it uses as much as digits as its factorization.

22442289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7480766.

The product of its digits is 18432, while the sum is 33.

The square root of 22442289 is about 4737.3293109093. The cubic root of 22442289 is about 282.0692325364.

The spelling of 22442289 in words is "twenty-two million, four hundred forty-two thousand, two hundred eighty-nine".