489924 has 36 divisors (see below), whose sum is σ = 1281280. Its totient is φ = 157680.

The previous prime is 489913. The next prime is 489941. The reversal of 489924 is 429984.

It is a happy number.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an Ulam number.

It is an unprimeable number.

489924 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, 897 + ... + 1335.

2⁴⁸⁹⁹²⁴ 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 489924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (640640).

489924 is an abundant number, since it is smaller than the sum of its proper divisors (791356).

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

489924 is a wasteful number, since it uses less digits than its factorization.

489924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480 (or 475 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 489924 is about 699.9457121806. The cubic root of 489924 is about 78.8332754756.

The spelling of 489924 in words is "four hundred eighty-nine thousand, nine hundred twenty-four".