489881 has 8 divisors (see below), whose sum is σ = 572160. Its totient is φ = 410688.

The previous prime is 489871. The next prime is 489887. The reversal of 489881 is 188984.

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 489881 - 2⁶ = 489817 is a prime.

It is a super-2 number, since 2×489881² = 479966788322, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a zygodrome in base 16.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 416 + ... + 1073.

It is an arithmetic number, because the mean of its divisors is an integer number (71520).

2⁴⁸⁹⁸⁸¹ is an apocalyptic number.

It is an amenable number.

489881 is a deficient number, since it is larger than the sum of its proper divisors (82279).

489881 is a wasteful number, since it uses less digits than its factorization.

489881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1543.

The product of its digits is 18432, while the sum is 38.

The square root of 489881 is about 699.9149948387. The cubic root of 489881 is about 78.8309690430.

The spelling of 489881 in words is "four hundred eighty-nine thousand, eight hundred eighty-one".