422991963 has 20 divisors (see below), whose sum is σ = 645326880. Its totient is φ = 275992272.

The previous prime is 422991949. The next prime is 422991973. The reversal of 422991963 is 369199224.

It is a happy number.

It is not a de Polignac number, because 422991963 - 2⁹ = 422991451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (422991923) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 51748 + ... + 59361.

It is an arithmetic number, because the mean of its divisors is an integer number (32266344).

Almost surely, 2^422991963 is an apocalyptic number.

422991963 is a deficient number, since it is larger than the sum of its proper divisors (222334917).

422991963 is a wasteful number, since it uses less digits than its factorization.

422991963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111168 (or 111159 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 422991963 is about 20566.7684141189. The cubic root of 422991963 is about 750.6613207018.

The spelling of 422991963 in words is "four hundred twenty-two million, nine hundred ninety-one thousand, nine hundred sixty-three".