489561 has 8 divisors (see below), whose sum is σ = 665280. Its totient is φ = 320112.

The previous prime is 489557. The next prime is 489571. The reversal of 489561 is 165984.

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

It is not a de Polignac number, because 489561 - 2² = 489557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (489551) 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, 1381 + ... + 1698.

It is an arithmetic number, because the mean of its divisors is an integer number (83160).

2⁴⁸⁹⁵⁶¹ is an apocalyptic number.

It is an amenable number.

489561 is a deficient number, since it is larger than the sum of its proper divisors (175719).

489561 is a wasteful number, since it uses less digits than its factorization.

489561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3135.

The product of its digits is 8640, while the sum is 33.

The square root of 489561 is about 699.6863583063. The cubic root of 489561 is about 78.8138006526.

The spelling of 489561 in words is "four hundred eighty-nine thousand, five hundred sixty-one".