422489 has 4 divisors (see below), whose sum is σ = 424320. Its totient is φ = 420660.

The previous prime is 422479. The next prime is 422537. The reversal of 422489 is 984224.

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 a de Polignac number, because none of the positive numbers 2^k-422489 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 422489.

It is not an unprimeable number, because it can be changed into a prime (422459) 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, 509 + ... + 1050.

It is an arithmetic number, because the mean of its divisors is an integer number (106080).

2⁴²²⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

422489 is a deficient number, since it is larger than the sum of its proper divisors (1831).

422489 is a wasteful number, since it uses less digits than its factorization.

422489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1830.

The product of its digits is 4608, while the sum is 29.

The square root of 422489 is about 649.9915384065. The cubic root of 422489 is about 75.0363675477.

The spelling of 422489 in words is "four hundred twenty-two thousand, four hundred eighty-nine".