489444 has 12 divisors (see below), whose sum is σ = 1142064. Its totient is φ = 163144.

The previous prime is 489439. The next prime is 489449. The reversal of 489444 is 444984.

It is an interprime number because it is at equal distance from previous prime (489439) and next prime (489449).

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 489444.

It is not an unprimeable number, because it can be changed into a prime (489449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20382 + ... + 20405.

It is an arithmetic number, because the mean of its divisors is an integer number (95172).

2⁴⁸⁹⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

489444 is an abundant number, since it is smaller than the sum of its proper divisors (652620).

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

489444 is a wasteful number, since it uses less digits than its factorization.

489444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40794 (or 40792 counting only the distinct ones).

The product of its digits is 18432, while the sum is 33.

The square root of 489444 is about 699.6027444200. The cubic root of 489444 is about 78.8075215921.

The spelling of 489444 in words is "four hundred eighty-nine thousand, four hundred forty-four".