23043439 has 2 divisors, whose sum is σ = 23043440. Its totient is φ = 23043438.

The previous prime is 23043437. The next prime is 23043443. The reversal of 23043439 is 93434032.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23043439 - 2¹ = 23043437 is a prime.

Together with 23043437, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23043437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11521719 + 11521720.

It is an arithmetic number, because the mean of its divisors is an integer number (11521720).

Almost surely, 2^23043439 is an apocalyptic number.

23043439 is a deficient number, since it is larger than the sum of its proper divisors (1).

23043439 is an equidigital number, since it uses as much as digits as its factorization.

23043439 is an evil number, because the sum of its binary digits is even.

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

The square root of 23043439 is about 4800.3582158002. The cubic root of 23043439 is about 284.5656212429.

The spelling of 23043439 in words is "twenty-three million, forty-three thousand, four hundred thirty-nine".