23452409 has 2 divisors, whose sum is σ = 23452410. Its totient is φ = 23452408.

The previous prime is 23452391. The next prime is 23452417. The reversal of 23452409 is 90425432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12250000 + 11202409 = 3500^2 + 3347^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23452409 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23452489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11726204 + 11726205.

It is an arithmetic number, because the mean of its divisors is an integer number (11726205).

Almost surely, 2^23452409 is an apocalyptic number.

It is an amenable number.

23452409 is a deficient number, since it is larger than the sum of its proper divisors (1).

23452409 is an equidigital number, since it uses as much as digits as its factorization.

23452409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 23452409 is about 4842.7687328635. The cubic root of 23452409 is about 286.2392288237.

The spelling of 23452409 in words is "twenty-three million, four hundred fifty-two thousand, four hundred nine".