22458889 has 4 divisors (see below), whose sum is σ = 23065924. Its totient is φ = 21851856.

The previous prime is 22458859. The next prime is 22458899. The reversal of 22458889 is 98885422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20748025 + 1710864 = 4555^2 + 1308^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22458889 is a prime.

It is a super-2 number, since 2×22458889² = 1008803390228642, which contains 22 as substring.

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 (22458829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303462 + ... + 303535.

It is an arithmetic number, because the mean of its divisors is an integer number (5766481).

Almost surely, 2^22458889 is an apocalyptic number.

It is an amenable number.

22458889 is a deficient number, since it is larger than the sum of its proper divisors (607035).

22458889 is an equidigital number, since it uses as much as digits as its factorization.

22458889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607034.

The product of its digits is 368640, while the sum is 46.

The square root of 22458889 is about 4739.0810290604. The cubic root of 22458889 is about 282.1387619155.

The spelling of 22458889 in words is "twenty-two million, four hundred fifty-eight thousand, eight hundred eighty-nine".