22444009 has 12 divisors (see below), whose sum is σ = 26367744. Its totient is φ = 19046664.

The previous prime is 22444007. The next prime is 22444027. The reversal of 22444009 is 90044422.

It is not a de Polignac number, because 22444009 - 2¹ = 22444007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22444003) 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, 2824 + ... + 7270.

It is an arithmetic number, because the mean of its divisors is an integer number (2197312).

Almost surely, 2^22444009 is an apocalyptic number.

It is an amenable number.

22444009 is a deficient number, since it is larger than the sum of its proper divisors (3923735).

22444009 is a wasteful number, since it uses less digits than its factorization.

22444009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4564 (or 4557 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 22444009 is about 4737.5108443148. The cubic root of 22444009 is about 282.0764383772.

The spelling of 22444009 in words is "twenty-two million, four hundred forty-four thousand, nine".