22434209 has 12 divisors (see below), whose sum is σ = 26191044. Its totient is φ = 19160064.

The previous prime is 22434199. The next prime is 22434227. The reversal of 22434209 is 90243422.

It can be written as a sum of positive squares in 2 ways, for example, as 17875984 + 4558225 = 4228^2 + 2135^2 .

It is not a de Polignac number, because 22434209 - 2²⁰ = 21385633 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22434239) 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 11 ways as a sum of consecutive naturals, for example, 16649 + ... + 17945.

It is an arithmetic number, because the mean of its divisors is an integer number (2182587).

Almost surely, 2^22434209 is an apocalyptic number.

It is an amenable number.

22434209 is a deficient number, since it is larger than the sum of its proper divisors (3756835).

22434209 is a wasteful number, since it uses less digits than its factorization.

22434209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1664 (or 1657 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 22434209 is about 4736.4764329615. The cubic root of 22434209 is about 282.0353769142.

The spelling of 22434209 in words is "twenty-two million, four hundred thirty-four thousand, two hundred nine".