439820 has 12 divisors (see below), whose sum is σ = 923664. Its totient is φ = 175920.

The previous prime is 439811. The next prime is 439823. The reversal of 439820 is 28934.

It is a d-powerful number, because it can be written as 4⁹ + 3¹¹ + 8 + 9 + 2⁹ + 0 .

It is a self number, because there is not a number n which added to its sum of digits gives 439820.

It is not an unprimeable number, because it can be changed into a prime (439823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10976 + ... + 11015.

It is an arithmetic number, because the mean of its divisors is an integer number (76972).

2⁴³⁹⁸²⁰ is an apocalyptic number.

It is an amenable number.

439820 is an abundant number, since it is smaller than the sum of its proper divisors (483844).

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

439820 is a wasteful number, since it uses less digits than its factorization.

439820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22000 (or 21998 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 439820 is about 663.1892640868. The cubic root of 439820 is about 76.0486761121.

The spelling of 439820 in words is "four hundred thirty-nine thousand, eight hundred twenty".