423589 has 4 divisors (see below), whose sum is σ = 448524. Its totient is φ = 398656.

The previous prime is 423587. The next prime is 423601. The reversal of 423589 is 985324.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 311364 + 112225 = 558^2 + 335^2 .

It is a cyclic number.

It is not a de Polignac number, because 423589 - 2¹ = 423587 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 423589.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12442 + ... + 12475.

It is an arithmetic number, because the mean of its divisors is an integer number (112131).

2⁴²³⁵⁸⁹ is an apocalyptic number.

It is an amenable number.

423589 is a deficient number, since it is larger than the sum of its proper divisors (24935).

423589 is a wasteful number, since it uses less digits than its factorization.

423589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24934.

The product of its digits is 8640, while the sum is 31.

The square root of 423589 is about 650.8371532112. The cubic root of 423589 is about 75.1014331261.

The spelling of 423589 in words is "four hundred twenty-three thousand, five hundred eighty-nine".