422389217 has 2 divisors, whose sum is σ = 422389218. Its totient is φ = 422389216.

The previous prime is 422389211. The next prime is 422389237. The reversal of 422389217 is 712983224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 416119201 + 6270016 = 20399^2 + 2504^2 .

It is a cyclic number.

It is not a de Polignac number, because 422389217 - 2⁸ = 422388961 is a prime.

It is not a weakly prime, because it can be changed into another prime (422389211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211194608 + 211194609.

It is an arithmetic number, because the mean of its divisors is an integer number (211194609).

Almost surely, 2^422389217 is an apocalyptic number.

It is an amenable number.

422389217 is a deficient number, since it is larger than the sum of its proper divisors (1).

422389217 is an equidigital number, since it uses as much as digits as its factorization.

422389217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 38.

The square root of 422389217 is about 20552.1097943739. The cubic root of 422389217 is about 750.3045974623.

The spelling of 422389217 in words is "four hundred twenty-two million, three hundred eighty-nine thousand, two hundred seventeen".