442589 has 8 divisors (see below), whose sum is σ = 528000. Its totient is φ = 362736.

The previous prime is 442579. The next prime is 442601. The reversal of 442589 is 985244.

442589 = T₇₇ + T₇₈ + ... + T₁₄₅.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 442589 - 2⁴ = 442573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 442589.

It is not an unprimeable number, because it can be changed into a prime (442579) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1214 + ... + 1535.

It is an arithmetic number, because the mean of its divisors is an integer number (66000).

2⁴⁴²⁵⁸⁹ is an apocalyptic number.

It is an amenable number.

442589 is a deficient number, since it is larger than the sum of its proper divisors (85411).

442589 is a wasteful number, since it uses less digits than its factorization.

442589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2779.

The product of its digits is 11520, while the sum is 32.

The square root of 442589 is about 665.2736279156. The cubic root of 442589 is about 76.2079370262.

The spelling of 442589 in words is "four hundred forty-two thousand, five hundred eighty-nine".