439900 has 36 divisors (see below), whose sum is σ = 984312. Its totient is φ = 170560.

The previous prime is 439891. The next prime is 439903. The reversal of 439900 is 9934.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (439903) by changing a digit.

439900 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5259 + ... + 5341.

It is an arithmetic number, because the mean of its divisors is an integer number (27342).

2⁴³⁹⁹⁰⁰ is an apocalyptic number.

439900 is the 332-nd decagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 439900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (492156).

439900 is an abundant number, since it is smaller than the sum of its proper divisors (544412).

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

439900 is a wasteful number, since it uses less digits than its factorization.

439900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 439900 is about 663.2495759516. The cubic root of 439900 is about 76.0532867295.

The spelling of 439900 in words is "four hundred thirty-nine thousand, nine hundred".