422061209 has 2 divisors, whose sum is σ = 422061210. Its totient is φ = 422061208.

The previous prime is 422061203. The next prime is 422061217. The reversal of 422061209 is 902160224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 369715984 + 52345225 = 19228^2 + 7235^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422061209 is a prime.

It is not a weakly prime, because it can be changed into another prime (422061203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211030604 + 211030605.

It is an arithmetic number, because the mean of its divisors is an integer number (211030605).

Almost surely, 2^422061209 is an apocalyptic number.

It is an amenable number.

422061209 is a deficient number, since it is larger than the sum of its proper divisors (1).

422061209 is an equidigital number, since it uses as much as digits as its factorization.

422061209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 422061209 is about 20544.1283339060. The cubic root of 422061209 is about 750.1103298430.

The spelling of 422061209 in words is "four hundred twenty-two million, sixty-one thousand, two hundred nine".