23040439 has 2 divisors, whose sum is σ = 23040440. Its totient is φ = 23040438.

The previous prime is 23040431. The next prime is 23040443. The reversal of 23040439 is 93404032.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23040439 - 2³ = 23040431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23040431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11520219 + 11520220.

It is an arithmetic number, because the mean of its divisors is an integer number (11520220).

Almost surely, 2^23040439 is an apocalyptic number.

23040439 is a deficient number, since it is larger than the sum of its proper divisors (1).

23040439 is an equidigital number, since it uses as much as digits as its factorization.

23040439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 23040439 is about 4800.0457289488. The cubic root of 23040439 is about 284.5532716118.

The spelling of 23040439 in words is "twenty-three million, forty thousand, four hundred thirty-nine".