439728 has 20 divisors (see below), whose sum is σ = 1136088. Its totient is φ = 146560.

The previous prime is 439723. The next prime is 439729. The reversal of 439728 is 827934.

It is not an unprimeable number, because it can be changed into a prime (439723) by changing a digit.

439728 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4533 + ... + 4628.

2⁴³⁹⁷²⁸ is an apocalyptic number.

439728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

439728 is an abundant number, since it is smaller than the sum of its proper divisors (696360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

439728 is a wasteful number, since it uses less digits than its factorization.

439728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9172 (or 9166 counting only the distinct ones).

The product of its digits is 12096, while the sum is 33.

The square root of 439728 is about 663.1198986609. The cubic root of 439728 is about 76.0433732108.

The spelling of 439728 in words is "four hundred thirty-nine thousand, seven hundred twenty-eight".