23345909 has 2 divisors, whose sum is σ = 23345910. Its totient is φ = 23345908.

The previous prime is 23345893. The next prime is 23345929. The reversal of 23345909 is 90954332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21252100 + 2093809 = 4610^2 + 1447^2 .

It is a cyclic number.

It is not a de Polignac number, because 23345909 - 2⁴ = 23345893 is a prime.

It is a Sophie Germain 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 (23345929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11672954 + 11672955.

It is an arithmetic number, because the mean of its divisors is an integer number (11672955).

Almost surely, 2^23345909 is an apocalyptic number.

It is an amenable number.

23345909 is a deficient number, since it is larger than the sum of its proper divisors (1).

23345909 is an equidigital number, since it uses as much as digits as its factorization.

23345909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 23345909 is about 4831.7604452208. The cubic root of 23345909 is about 285.8052899036.

The spelling of 23345909 in words is "twenty-three million, three hundred forty-five thousand, nine hundred nine".