489889 has 4 divisors (see below), whose sum is σ = 518724. Its totient is φ = 461056.

The previous prime is 489887. The next prime is 489901. The reversal of 489889 is 988984.

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

It can be written as a sum of positive squares in 2 ways, for example, as 435600 + 54289 = 660^2 + 233^2 .

It is a cyclic number.

It is not a de Polignac number, because 489889 - 2¹ = 489887 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489887) 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, 14392 + ... + 14425.

It is an arithmetic number, because the mean of its divisors is an integer number (129681).

2⁴⁸⁹⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

489889 is a deficient number, since it is larger than the sum of its proper divisors (28835).

489889 is a wasteful number, since it uses less digits than its factorization.

489889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28834.

The product of its digits is 165888, while the sum is 46.

The square root of 489889 is about 699.9207097950. The cubic root of 489889 is about 78.8313981570.

It can be divided in two parts, 489 and 889, that added together give a triangular number (1378 = T₅₂).

The spelling of 489889 in words is "four hundred eighty-nine thousand, eight hundred eighty-nine".