422343239 has 2 divisors, whose sum is σ = 422343240. Its totient is φ = 422343238.

The previous prime is 422343217. The next prime is 422343241. The reversal of 422343239 is 932343224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 422343239 - 2²⁴ = 405566023 is a prime.

It is a super-2 number, since 2×422343239² = 356747623058022242, which contains 22 as substring.

Together with 422343241, 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 (422343539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211171619 + 211171620.

It is an arithmetic number, because the mean of its divisors is an integer number (211171620).

Almost surely, 2^422343239 is an apocalyptic number.

422343239 is a deficient number, since it is larger than the sum of its proper divisors (1).

422343239 is an equidigital number, since it uses as much as digits as its factorization.

422343239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 32.

The square root of 422343239 is about 20550.9911926408. The cubic root of 422343239 is about 750.2773723697.

The spelling of 422343239 in words is "four hundred twenty-two million, three hundred forty-three thousand, two hundred thirty-nine".