22509889 has 4 divisors (see below), whose sum is σ = 23694640. Its totient is φ = 21325140.

The previous prime is 22509881. The next prime is 22509919. The reversal of 22509889 is 98890522.

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 22509889 - 2³ = 22509881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22509881) 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, 592347 + ... + 592384.

It is an arithmetic number, because the mean of its divisors is an integer number (5923660).

Almost surely, 2^22509889 is an apocalyptic number.

It is an amenable number.

22509889 is a deficient number, since it is larger than the sum of its proper divisors (1184751).

22509889 is a wasteful number, since it uses less digits than its factorization.

22509889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184750.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 22509889 is about 4744.4587678680. The cubic root of 22509889 is about 282.3521621855.

The spelling of 22509889 in words is "twenty-two million, five hundred nine thousand, eight hundred eighty-nine".