23908439 has 2 divisors, whose sum is σ = 23908440. Its totient is φ = 23908438.

The previous prime is 23908421. The next prime is 23908483. The reversal of 23908439 is 93480932.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23908439 is a prime.

It is a super-2 number, since 2×23908439² = 1143226910833442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23908739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11954219 + 11954220.

It is an arithmetic number, because the mean of its divisors is an integer number (11954220).

Almost surely, 2^23908439 is an apocalyptic number.

23908439 is a deficient number, since it is larger than the sum of its proper divisors (1).

23908439 is an equidigital number, since it uses as much as digits as its factorization.

23908439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 23908439 is about 4889.6256502927. The cubic root of 23908439 is about 288.0826304504.

The spelling of 23908439 in words is "twenty-three million, nine hundred eight thousand, four hundred thirty-nine".