22420439 has 2 divisors, whose sum is σ = 22420440. Its totient is φ = 22420438.

The previous prime is 22420429. The next prime is 22420441. The reversal of 22420439 is 93402422.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22420439 - 2⁸ = 22420183 is a prime.

Together with 22420441, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22420429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11210219 + 11210220.

It is an arithmetic number, because the mean of its divisors is an integer number (11210220).

Almost surely, 2^22420439 is an apocalyptic number.

22420439 is a deficient number, since it is larger than the sum of its proper divisors (1).

22420439 is an equidigital number, since it uses as much as digits as its factorization.

22420439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 22420439 is about 4735.0225976230. The cubic root of 22420439 is about 281.9776611582.

The spelling of 22420439 in words is "twenty-two million, four hundred twenty thousand, four hundred thirty-nine".