439812 has 36 divisors (see below), whose sum is σ = 1172080. Its totient is φ = 138672.

The previous prime is 439811. The next prime is 439823. The reversal of 439812 is 218934.

It is a tau number, because it is divible by the number of its divisors (36).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 439812.

It is not an unprimeable number, because it can be changed into a prime (439811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 363 + ... + 1005.

2⁴³⁹⁸¹² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 439812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (586040).

439812 is an abundant number, since it is smaller than the sum of its proper divisors (732268).

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

439812 is a wasteful number, since it uses less digits than its factorization.

439812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672 (or 667 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 439812 is about 663.1832325987. The cubic root of 439812 is about 76.0482150196.

The spelling of 439812 in words is "four hundred thirty-nine thousand, eight hundred twelve".