23422909 has 2 divisors, whose sum is σ = 23422910. Its totient is φ = 23422908.

The previous prime is 23422871. The next prime is 23422913. The reversal of 23422909 is 90922432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17614809 + 5808100 = 4197^2 + 2410^2 .

It is a cyclic number.

It is not a de Polignac number, because 23422909 - 2¹³ = 23414717 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23422409) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11711454 + 11711455.

It is an arithmetic number, because the mean of its divisors is an integer number (11711455).

Almost surely, 2^23422909 is an apocalyptic number.

It is an amenable number.

23422909 is a deficient number, since it is larger than the sum of its proper divisors (1).

23422909 is an equidigital number, since it uses as much as digits as its factorization.

23422909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 23422909 is about 4839.7219961481. The cubic root of 23422909 is about 286.1191615530.

The spelling of 23422909 in words is "twenty-three million, four hundred twenty-two thousand, nine hundred nine".