22438459 has 2 divisors, whose sum is σ = 22438460. Its totient is φ = 22438458.

The previous prime is 22438457. The next prime is 22438511. The reversal of 22438459 is 95483422.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22438459 - 2¹ = 22438457 is a prime.

Together with 22438457, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22438457) 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, 11219229 + 11219230.

It is an arithmetic number, because the mean of its divisors is an integer number (11219230).

Almost surely, 2^22438459 is an apocalyptic number.

22438459 is a deficient number, since it is larger than the sum of its proper divisors (1).

22438459 is an equidigital number, since it uses as much as digits as its factorization.

22438459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 37.

The square root of 22438459 is about 4736.9250574608. The cubic root of 22438459 is about 282.0531856494.

It can be divided in two parts, 224 and 38459, that added together give a palindrome (38683).

The spelling of 22438459 in words is "twenty-two million, four hundred thirty-eight thousand, four hundred fifty-nine".