439959 has 16 divisors (see below), whose sum is σ = 655200. Its totient is φ = 260736.

The previous prime is 439949. The next prime is 439961. The reversal of 439959 is 959934.

It is a happy number.

It is not a de Polignac number, because 439959 - 2¹⁵ = 407191 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

439959 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (439919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 937 + ... + 1325.

It is an arithmetic number, because the mean of its divisors is an integer number (40950).

2⁴³⁹⁹⁵⁹ is an apocalyptic number.

439959 is a deficient number, since it is larger than the sum of its proper divisors (215241).

439959 is a wasteful number, since it uses less digits than its factorization.

439959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434.

The product of its digits is 43740, while the sum is 39.

The square root of 439959 is about 663.2940524383. The cubic root of 439959 is about 76.0566867017.

The spelling of 439959 in words is "four hundred thirty-nine thousand, nine hundred fifty-nine".