22430909 has 2 divisors, whose sum is σ = 22430910. Its totient is φ = 22430908.

The previous prime is 22430893. The next prime is 22430921. The reversal of 22430909 is 90903422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21436900 + 994009 = 4630^2 + 997^2 .

It is a cyclic number.

It is not a de Polignac number, because 22430909 - 2⁴ = 22430893 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22430209) 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 as a sum of consecutive naturals, namely, 11215454 + 11215455.

It is an arithmetic number, because the mean of its divisors is an integer number (11215455).

Almost surely, 2^22430909 is an apocalyptic number.

It is an amenable number.

22430909 is a deficient number, since it is larger than the sum of its proper divisors (1).

22430909 is an equidigital number, since it uses as much as digits as its factorization.

22430909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 22430909 is about 4736.1280599241. The cubic root of 22430909 is about 282.0215474037.

The spelling of 22430909 in words is "twenty-two million, four hundred thirty thousand, nine hundred nine".