22989409 has 4 divisors (see below), whose sum is σ = 23379120. Its totient is φ = 22599700.

The previous prime is 22989403. The next prime is 22989419. The reversal of 22989409 is 90498922.

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 22989409 - 2³ = 22989401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22989401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194767 + ... + 194884.

It is an arithmetic number, because the mean of its divisors is an integer number (5844780).

Almost surely, 2^22989409 is an apocalyptic number.

It is an amenable number.

22989409 is a deficient number, since it is larger than the sum of its proper divisors (389711).

22989409 is an equidigital number, since it uses as much as digits as its factorization.

22989409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389710.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 22989409 is about 4794.7272080902. The cubic root of 22989409 is about 284.3430399859.

The spelling of 22989409 in words is "twenty-two million, nine hundred eighty-nine thousand, four hundred nine".