422445239 has 2 divisors, whose sum is σ = 422445240. Its totient is φ = 422445238.

The previous prime is 422445217. The next prime is 422445241. The reversal of 422445239 is 932544224.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422445239 is a prime.

It is a Sophie Germain prime.

Together with 422445241, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 422445199 and 422445208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422445269) 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, 211222619 + 211222620.

It is an arithmetic number, because the mean of its divisors is an integer number (211222620).

Almost surely, 2^422445239 is an apocalyptic number.

422445239 is a deficient number, since it is larger than the sum of its proper divisors (1).

422445239 is an equidigital number, since it uses as much as digits as its factorization.

422445239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 35.

The square root of 422445239 is about 20553.4726749520. The cubic root of 422445239 is about 750.3377672689.

The spelling of 422445239 in words is "four hundred twenty-two million, four hundred forty-five thousand, two hundred thirty-nine".