422589 has 4 divisors (see below), whose sum is σ = 563456. Its totient is φ = 281724.

The previous prime is 422581. The next prime is 422621. The reversal of 422589 is 985224.

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 not a de Polignac number, because 422589 - 2³ = 422581 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

422589 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422581) 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, 70429 + ... + 70434.

It is an arithmetic number, because the mean of its divisors is an integer number (140864).

2⁴²²⁵⁸⁹ is an apocalyptic number.

It is an amenable number.

422589 is a deficient number, since it is larger than the sum of its proper divisors (140867).

422589 is a wasteful number, since it uses less digits than its factorization.

422589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140866.

The product of its digits is 5760, while the sum is 30.

The square root of 422589 is about 650.0684579335. The cubic root of 422589 is about 75.0422872638.

The spelling of 422589 in words is "four hundred twenty-two thousand, five hundred eighty-nine".