422262209 has 2 divisors, whose sum is σ = 422262210. Its totient is φ = 422262208.

The previous prime is 422262187. The next prime is 422262293. The reversal of 422262209 is 902262224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 382319809 + 39942400 = 19553^2 + 6320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422262209 is a prime.

It is not a weakly prime, because it can be changed into another prime (422262299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211131104 + 211131105.

It is an arithmetic number, because the mean of its divisors is an integer number (211131105).

Almost surely, 2^422262209 is an apocalyptic number.

It is an amenable number.

422262209 is a deficient number, since it is larger than the sum of its proper divisors (1).

422262209 is an equidigital number, since it uses as much as digits as its factorization.

422262209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 422262209 is about 20549.0196603147. The cubic root of 422262209 is about 750.2293870202.

The spelling of 422262209 in words is "four hundred twenty-two million, two hundred sixty-two thousand, two hundred nine".