422897 has 2 divisors, whose sum is σ = 422898. Its totient is φ = 422896.

The previous prime is 422893. The next prime is 422899. The reversal of 422897 is 798224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 364816 + 58081 = 604^2 + 241^2 .

It is a cyclic number.

It is not a de Polignac number, because 422897 - 2² = 422893 is a prime.

Together with 422899, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (422893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211448 + 211449.

It is an arithmetic number, because the mean of its divisors is an integer number (211449).

2⁴²²⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

422897 is a deficient number, since it is larger than the sum of its proper divisors (1).

422897 is an equidigital number, since it uses as much as digits as its factorization.

422897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 32.

The square root of 422897 is about 650.3053129108. The cubic root of 422897 is about 75.0605141237.

The spelling of 422897 in words is "four hundred twenty-two thousand, eight hundred ninety-seven".