22398489 has 12 divisors (see below), whose sum is σ = 32964516. Its totient is φ = 14650272.

The previous prime is 22398479. The next prime is 22398533. The reversal of 22398489 is 98489322.

It can be written as a sum of positive squares in 2 ways, for example, as 11108889 + 11289600 = 3333^2 + 3360^2 .

It is not a de Polignac number, because 22398489 - 2⁵ = 22398457 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (22398419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23002 + ... + 23955.

It is an arithmetic number, because the mean of its divisors is an integer number (2747043).

Almost surely, 2^22398489 is an apocalyptic number.

It is an amenable number.

22398489 is a deficient number, since it is larger than the sum of its proper divisors (10566027).

22398489 is a wasteful number, since it uses less digits than its factorization.

22398489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47016 (or 47013 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 22398489 is about 4732.7041952778. The cubic root of 22398489 is about 281.8856107660.

The spelling of 22398489 in words is "twenty-two million, three hundred ninety-eight thousand, four hundred eighty-nine".