489281 has 8 divisors (see below), whose sum is σ = 536424. Its totient is φ = 443520.

The previous prime is 489263. The next prime is 489283. The reversal of 489281 is 182984.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 78400 + 410881 = 280^2 + 641^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 489281 - 2⁶ = 489217 is a prime.

It is a super-2 number, since 2×489281² = 478791793922, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (489283) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 485 + ... + 1101.

It is an arithmetic number, because the mean of its divisors is an integer number (67053).

2⁴⁸⁹²⁸¹ is an apocalyptic number.

It is an amenable number.

489281 is a deficient number, since it is larger than the sum of its proper divisors (47143).

489281 is a wasteful number, since it uses less digits than its factorization.

489281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691.

The product of its digits is 4608, while the sum is 32.

The square root of 489281 is about 699.4862400362. The cubic root of 489281 is about 78.7987721729.

The spelling of 489281 in words is "four hundred eighty-nine thousand, two hundred eighty-one".