422815963 has 2 divisors, whose sum is σ = 422815964. Its totient is φ = 422815962.

The previous prime is 422815961. The next prime is 422815973. The reversal of 422815963 is 369518224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 422815963 - 2¹ = 422815961 is a prime.

Together with 422815961, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (422815961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211407981 + 211407982.

It is an arithmetic number, because the mean of its divisors is an integer number (211407982).

Almost surely, 2^422815963 is an apocalyptic number.

422815963 is a deficient number, since it is larger than the sum of its proper divisors (1).

422815963 is an equidigital number, since it uses as much as digits as its factorization.

422815963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 40.

The square root of 422815963 is about 20562.4892218817. The cubic root of 422815963 is about 750.5571936482.

The spelling of 422815963 in words is "four hundred twenty-two million, eight hundred fifteen thousand, nine hundred sixty-three".