23403439 has 2 divisors, whose sum is σ = 23403440. Its totient is φ = 23403438.

The previous prime is 23403437. The next prime is 23403451. The reversal of 23403439 is 93430432.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23403439 - 2¹ = 23403437 is a prime.

Together with 23403437, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23403431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11701719 + 11701720.

It is an arithmetic number, because the mean of its divisors is an integer number (11701720).

Almost surely, 2^23403439 is an apocalyptic number.

23403439 is a deficient number, since it is larger than the sum of its proper divisors (1).

23403439 is an equidigital number, since it uses as much as digits as its factorization.

23403439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 23403439 is about 4837.7100987967. The cubic root of 23403439 is about 286.0398619191.

The spelling of 23403439 in words is "twenty-three million, four hundred three thousand, four hundred thirty-nine".