489724 has 12 divisors (see below), whose sum is σ = 862848. Its totient is φ = 243200.

The previous prime is 489691. The next prime is 489733. The reversal of 489724 is 427984.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 489724.

It is a congruent number.

It is an unprimeable number.

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, 444 + ... + 1084.

It is an arithmetic number, because the mean of its divisors is an integer number (71904).

2⁴⁸⁹⁷²⁴ is an apocalyptic number.

It is an amenable number.

489724 is a deficient number, since it is larger than the sum of its proper divisors (373124).

489724 is a wasteful number, since it uses less digits than its factorization.

489724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836 (or 834 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 489724 is about 699.8028293741. The cubic root of 489724 is about 78.8225467360.

The spelling of 489724 in words is "four hundred eighty-nine thousand, seven hundred twenty-four".