489440 has 96 divisors (see below), whose sum is σ = 1451520. Its totient is φ = 152064.

The previous prime is 489439. The next prime is 489449. The reversal of 489440 is 44984.

It is a happy number.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 14.

It is a congruent number.

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

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21269 + ... + 21291.

It is an arithmetic number, because the mean of its divisors is an integer number (15120).

2⁴⁸⁹⁴⁴⁰ is an apocalyptic number.

489440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 489440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (725760).

489440 is an abundant number, since it is smaller than the sum of its proper divisors (962080).

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

489440 is a wasteful number, since it uses less digits than its factorization.

489440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64 (or 56 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 489440 is about 699.5998856489. The cubic root of 489440 is about 78.8073069057.

It can be divided in two parts, 489 and 440, that added together give a palindrome (929).

The spelling of 489440 in words is "four hundred eighty-nine thousand, four hundred forty".