23838439 has 2 divisors, whose sum is σ = 23838440. Its totient is φ = 23838438.

The previous prime is 23838431. The next prime is 23838449. The reversal of 23838439 is 93483832.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23838439 - 2³ = 23838431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23838431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11919219 + 11919220.

It is an arithmetic number, because the mean of its divisors is an integer number (11919220).

Almost surely, 2^23838439 is an apocalyptic number.

23838439 is a deficient number, since it is larger than the sum of its proper divisors (1).

23838439 is an equidigital number, since it uses as much as digits as its factorization.

23838439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 40.

The square root of 23838439 is about 4882.4623910482. The cubic root of 23838439 is about 287.8012026679.

The spelling of 23838439 in words is "twenty-three million, eight hundred thirty-eight thousand, four hundred thirty-nine".