489855 has 24 divisors (see below), whose sum is σ = 839952. Its totient is φ = 243712.

The previous prime is 489851. The next prime is 489869. The reversal of 489855 is 558984.

489855 = 311² + 312² + ... + 315².

It is not a de Polignac number, because 489855 - 2² = 489851 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489851) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4279 + ... + 4391.

It is an arithmetic number, because the mean of its divisors is an integer number (34998).

2⁴⁸⁹⁸⁵⁵ is an apocalyptic number.

489855 is a deficient number, since it is larger than the sum of its proper divisors (350097).

489855 is a wasteful number, since it uses less digits than its factorization.

489855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155 (or 138 counting only the distinct ones).

The product of its digits is 57600, while the sum is 39.

The square root of 489855 is about 699.8964209081. The cubic root of 489855 is about 78.8295743904.

The spelling of 489855 in words is "four hundred eighty-nine thousand, eight hundred fifty-five".