489931 has 8 divisors (see below), whose sum is σ = 533120. Its totient is φ = 450216.

The previous prime is 489913. The next prime is 489941. The reversal of 489931 is 139984.

It is not a de Polignac number, because 489931 - 2⁷ = 489803 is a prime.

It is a super-2 number, since 2×489931² = 480064769522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489901) 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, 2086 + ... + 2308.

It is an arithmetic number, because the mean of its divisors is an integer number (66640).

2⁴⁸⁹⁹³¹ is an apocalyptic number.

489931 is a deficient number, since it is larger than the sum of its proper divisors (43189).

489931 is an equidigital number, since it uses as much as digits as its factorization.

489931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262 (or 236 counting only the distinct ones).

The product of its digits is 7776, while the sum is 34.

The square root of 489931 is about 699.9507125505. The cubic root of 489931 is about 78.8336509286.

The spelling of 489931 in words is "four hundred eighty-nine thousand, nine hundred thirty-one".