22389839 has 2 divisors, whose sum is σ = 22389840. Its totient is φ = 22389838.

The previous prime is 22389821. The next prime is 22389841. The reversal of 22389839 is 93898322.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22389839 is a prime.

Together with 22389841, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22389839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22389889) 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, 11194919 + 11194920.

It is an arithmetic number, because the mean of its divisors is an integer number (11194920).

Almost surely, 2^22389839 is an apocalyptic number.

22389839 is a deficient number, since it is larger than the sum of its proper divisors (1).

22389839 is an equidigital number, since it uses as much as digits as its factorization.

22389839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 44.

The square root of 22389839 is about 4731.7902531706. The cubic root of 22389839 is about 281.8493192632.

The spelling of 22389839 in words is "twenty-two million, three hundred eighty-nine thousand, eight hundred thirty-nine".