422093909 has 2 divisors, whose sum is σ = 422093910. Its totient is φ = 422093908.

The previous prime is 422093857. The next prime is 422093939. The reversal of 422093909 is 909390224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 419020900 + 3073009 = 20470^2 + 1753^2 .

It is a cyclic number.

It is not a de Polignac number, because 422093909 - 2²⁰ = 421045333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422093939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211046954 + 211046955.

It is an arithmetic number, because the mean of its divisors is an integer number (211046955).

Almost surely, 2^422093909 is an apocalyptic number.

It is an amenable number.

422093909 is a deficient number, since it is larger than the sum of its proper divisors (1).

422093909 is an equidigital number, since it uses as much as digits as its factorization.

422093909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 422093909 is about 20544.9241663239. The cubic root of 422093909 is about 750.1297014206.

The spelling of 422093909 in words is "four hundred twenty-two million, ninety-three thousand, nine hundred nine".