439628 has 18 divisors (see below), whose sum is σ = 895356. Its totient is φ = 188328.

The previous prime is 439613. The next prime is 439631. The reversal of 439628 is 826934.

439628 is nontrivially palindromic in base 3.

It is a d-powerful number, because it can be written as 4⁹ + 3¹¹ + 6³ + 9² + 2⁵ + 8 .

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 439594 and 439603.

It is an unprimeable number.

439628 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 5 ways as a sum of consecutive naturals, for example, 926 + ... + 1317.

It is an arithmetic number, because the mean of its divisors is an integer number (49742).

2⁴³⁹⁶²⁸ is an apocalyptic number.

It is an amenable number.

439628 is an abundant number, since it is smaller than the sum of its proper divisors (455728).

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

439628 is a wasteful number, since it uses less digits than its factorization.

439628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2261 (or 2252 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 439628 is about 663.0444932280. The cubic root of 439628 is about 76.0376083487.

The spelling of 439628 in words is "four hundred thirty-nine thousand, six hundred twenty-eight".