489021 has 8 divisors (see below), whose sum is σ = 702240. Its totient is φ = 300912.

The previous prime is 489019. The next prime is 489043. The reversal of 489021 is 120984.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 489021 - 2¹ = 489019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 488982 and 489000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489001) 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 7 ways as a sum of consecutive naturals, for example, 6231 + ... + 6308.

It is an arithmetic number, because the mean of its divisors is an integer number (87780).

2⁴⁸⁹⁰²¹ is an apocalyptic number.

It is an amenable number.

489021 is a deficient number, since it is larger than the sum of its proper divisors (213219).

489021 is a wasteful number, since it uses less digits than its factorization.

489021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12555.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 489021 is about 699.3003646503. The cubic root of 489021 is about 78.7848120213.

The spelling of 489021 in words is "four hundred eighty-nine thousand, twenty-one".