489321 has 20 divisors (see below), whose sum is σ = 836352. Its totient is φ = 279288.

The previous prime is 489299. The next prime is 489329. The reversal of 489321 is 123984.

It is not a de Polignac number, because 489321 - 2⁶ = 489257 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

489321 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (489329) 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 19 ways as a sum of consecutive naturals, for example, 136 + ... + 998.

2⁴⁸⁹³²¹ is an apocalyptic number.

It is an amenable number.

489321 is a deficient number, since it is larger than the sum of its proper divisors (347031).

489321 is an equidigital number, since it uses as much as digits as its factorization.

489321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882 (or 873 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 489321 is about 699.5148318656. The cubic root of 489321 is about 78.8009194495.

The spelling of 489321 in words is "four hundred eighty-nine thousand, three hundred twenty-one".