422356439 has 2 divisors, whose sum is σ = 422356440. Its totient is φ = 422356438.

The previous prime is 422356423. The next prime is 422356469. The reversal of 422356439 is 934653224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 422356439 - 2⁴ = 422356423 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 (422356469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211178219 + 211178220.

It is an arithmetic number, because the mean of its divisors is an integer number (211178220).

Almost surely, 2^422356439 is an apocalyptic number.

422356439 is a deficient number, since it is larger than the sum of its proper divisors (1).

422356439 is an equidigital number, since it uses as much as digits as its factorization.

422356439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 38.

The square root of 422356439 is about 20551.3123425245. The cubic root of 422356439 is about 750.2851887280.

The spelling of 422356439 in words is "four hundred twenty-two million, three hundred fifty-six thousand, four hundred thirty-nine".