23838389 has 2 divisors, whose sum is σ = 23838390. Its totient is φ = 23838388.

The previous prime is 23838371. The next prime is 23838391. The reversal of 23838389 is 98383832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17156164 + 6682225 = 4142^2 + 2585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23838389 is a prime.

Together with 23838391, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23838359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11919194 + 11919195.

It is an arithmetic number, because the mean of its divisors is an integer number (11919195).

Almost surely, 2^23838389 is an apocalyptic number.

It is an amenable number.

23838389 is a deficient number, since it is larger than the sum of its proper divisors (1).

23838389 is an equidigital number, since it uses as much as digits as its factorization.

23838389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 44.

The square root of 23838389 is about 4882.4572706784. The cubic root of 23838389 is about 287.8010014512.

Adding to 23838389 its reverse (98383832), we get a palindrome (122222221).

The spelling of 23838389 in words is "twenty-three million, eight hundred thirty-eight thousand, three hundred eighty-nine".