422951917 has 2 divisors, whose sum is σ = 422951918. Its totient is φ = 422951916.

The previous prime is 422951873. The next prime is 422951929. The reversal of 422951917 is 719159224.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 232898121 + 190053796 = 15261^2 + 13786^2 .

It is a cyclic number.

It is not a de Polignac number, because 422951917 - 2¹¹ = 422949869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 422951917.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422951987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211475958 + 211475959.

It is an arithmetic number, because the mean of its divisors is an integer number (211475959).

Almost surely, 2^422951917 is an apocalyptic number.

It is an amenable number.

422951917 is a deficient number, since it is larger than the sum of its proper divisors (1).

422951917 is an equidigital number, since it uses as much as digits as its factorization.

422951917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 40.

The square root of 422951917 is about 20565.7948302515. The cubic root of 422951917 is about 750.6376307861.

The spelling of 422951917 in words is "four hundred twenty-two million, nine hundred fifty-one thousand, nine hundred seventeen".