22288439 has 2 divisors, whose sum is σ = 22288440. Its totient is φ = 22288438.

The previous prime is 22288397. The next prime is 22288447. The reversal of 22288439 is 93488222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22288439 - 2⁸ = 22288183 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22288499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11144219 + 11144220.

It is an arithmetic number, because the mean of its divisors is an integer number (11144220).

Almost surely, 2^22288439 is an apocalyptic number.

22288439 is a deficient number, since it is larger than the sum of its proper divisors (1).

22288439 is an equidigital number, since it uses as much as digits as its factorization.

22288439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55296, while the sum is 38.

The square root of 22288439 is about 4721.0633336146. The cubic root of 22288439 is about 281.4231918298.

The spelling of 22288439 in words is "twenty-two million, two hundred eighty-eight thousand, four hundred thirty-nine".