22243439 has 2 divisors, whose sum is σ = 22243440. Its totient is φ = 22243438.

The previous prime is 22243423. The next prime is 22243447. The reversal of 22243439 is 93434222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22243439 - 2⁴ = 22243423 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22243489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11121719 + 11121720.

It is an arithmetic number, because the mean of its divisors is an integer number (11121720).

Almost surely, 2^22243439 is an apocalyptic number.

22243439 is a deficient number, since it is larger than the sum of its proper divisors (1).

22243439 is an equidigital number, since it uses as much as digits as its factorization.

22243439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 29.

The square root of 22243439 is about 4716.2950501426. The cubic root of 22243439 is about 281.2336679240.

The spelling of 22243439 in words is "twenty-two million, two hundred forty-three thousand, four hundred thirty-nine".