422817 has 4 divisors (see below), whose sum is σ = 563760. Its totient is φ = 281876.

The previous prime is 422803. The next prime is 422827. The reversal of 422817 is 718224.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 422817 - 2⁶ = 422753 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (422827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70467 + ... + 70472.

It is an arithmetic number, because the mean of its divisors is an integer number (140940).

2⁴²²⁸¹⁷ is an apocalyptic number.

It is an amenable number.

422817 is a deficient number, since it is larger than the sum of its proper divisors (140943).

422817 is a wasteful number, since it uses less digits than its factorization.

422817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140942.

The product of its digits is 896, while the sum is 24.

The square root of 422817 is about 650.2438004318. The cubic root of 422817 is about 75.0557807254.

The spelling of 422817 in words is "four hundred twenty-two thousand, eight hundred seventeen".