23222909 has 2 divisors, whose sum is σ = 23222910. Its totient is φ = 23222908.

The previous prime is 23222897. The next prime is 23222917. The reversal of 23222909 is 90922232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22534009 + 688900 = 4747^2 + 830^2 .

It is a cyclic number.

It is not a de Polignac number, because 23222909 - 2¹² = 23218813 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 (23222989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11611454 + 11611455.

It is an arithmetic number, because the mean of its divisors is an integer number (11611455).

Almost surely, 2^23222909 is an apocalyptic number.

It is an amenable number.

23222909 is a deficient number, since it is larger than the sum of its proper divisors (1).

23222909 is an equidigital number, since it uses as much as digits as its factorization.

23222909 is an evil number, because the sum of its binary digits is even.

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

The square root of 23222909 is about 4819.0153558585. The cubic root of 23222909 is about 285.3024756216.

The spelling of 23222909 in words is "twenty-three million, two hundred twenty-two thousand, nine hundred nine".