489900 has 72 divisors (see below), whose sum is σ = 1499904. Its totient is φ = 123200.

The previous prime is 489887. The next prime is 489901. The reversal of 489900 is 9984.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a plaindrome in base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 489900.

It is not an unprimeable number, because it can be changed into a prime (489901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6865 + ... + 6935.

It is an arithmetic number, because the mean of its divisors is an integer number (20832).

2⁴⁸⁹⁹⁰⁰ 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 489900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (749952).

489900 is an abundant number, since it is smaller than the sum of its proper divisors (1010004).

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

489900 is a wasteful number, since it uses less digits than its factorization.

489900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 489900 is about 699.9285677839. The cubic root of 489900 is about 78.8319881810.

The spelling of 489900 in words is "four hundred eighty-nine thousand, nine hundred".