422228761 has 2 divisors, whose sum is σ = 422228762. Its totient is φ = 422228760.

The previous prime is 422228749. The next prime is 422228771. The reversal of 422228761 is 167822224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213715161 + 208513600 = 14619^2 + 14440^2 .

It is a cyclic number.

It is not a de Polignac number, because 422228761 - 2¹⁵ = 422195993 is a prime.

It is not a weakly prime, because it can be changed into another prime (422228731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211114380 + 211114381.

It is an arithmetic number, because the mean of its divisors is an integer number (211114381).

Almost surely, 2^422228761 is an apocalyptic number.

It is an amenable number.

422228761 is a deficient number, since it is larger than the sum of its proper divisors (1).

422228761 is an equidigital number, since it uses as much as digits as its factorization.

422228761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21504, while the sum is 34.

The square root of 422228761 is about 20548.2057854208. The cubic root of 422228761 is about 750.2095775790.

The spelling of 422228761 in words is "four hundred twenty-two million, two hundred twenty-eight thousand, seven hundred sixty-one".