489859 has 4 divisors (see below), whose sum is σ = 491400. Its totient is φ = 488320.

The previous prime is 489851. The next prime is 489869. The reversal of 489859 is 958984.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 489859 - 2³ = 489851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489851) 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 3 ways as a sum of consecutive naturals, for example, 97 + ... + 994.

It is an arithmetic number, because the mean of its divisors is an integer number (122850).

2⁴⁸⁹⁸⁵⁹ is an apocalyptic number.

489859 is a deficient number, since it is larger than the sum of its proper divisors (1541).

489859 is a wasteful number, since it uses less digits than its factorization.

489859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1540.

The product of its digits is 103680, while the sum is 43.

The square root of 489859 is about 699.8992784680. The cubic root of 489859 is about 78.8297889556.

The spelling of 489859 in words is "four hundred eighty-nine thousand, eight hundred fifty-nine".