439285 has 24 divisors (see below), whose sum is σ = 673056. Its totient is φ = 272160.

The previous prime is 439279. The next prime is 439289. The reversal of 439285 is 582934.

It is not a de Polignac number, because 439285 - 2⁵ = 439253 is a prime.

It is a super-2 number, since 2×439285² = 385942622450, which contains 22 as substring.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (439289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2614 + ... + 2776.

It is an arithmetic number, because the mean of its divisors is an integer number (28044).

2⁴³⁹²⁸⁵ is an apocalyptic number.

It is an amenable number.

439285 is a deficient number, since it is larger than the sum of its proper divisors (233771).

439285 is a wasteful number, since it uses less digits than its factorization.

439285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193 (or 186 counting only the distinct ones).

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

The square root of 439285 is about 662.7857874155. The cubic root of 439285 is about 76.0178282275.

The spelling of 439285 in words is "four hundred thirty-nine thousand, two hundred eighty-five".