422564773 has 2 divisors, whose sum is σ = 422564774. Its totient is φ = 422564772.

The previous prime is 422564761. The next prime is 422564777. The reversal of 422564773 is 377465224.

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., 253382724 + 169182049 = 15918^2 + 13007^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422564773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422564777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211282386 + 211282387.

It is an arithmetic number, because the mean of its divisors is an integer number (211282387).

Almost surely, 2^422564773 is an apocalyptic number.

It is an amenable number.

422564773 is a deficient number, since it is larger than the sum of its proper divisors (1).

422564773 is an equidigital number, since it uses as much as digits as its factorization.

422564773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 282240, while the sum is 40.

The square root of 422564773 is about 20556.3803477169. The cubic root of 422564773 is about 750.4085317990.

The spelling of 422564773 in words is "four hundred twenty-two million, five hundred sixty-four thousand, seven hundred seventy-three".