489811980 has 48 divisors (see below), whose sum is σ = 1567399680. Its totient is φ = 111956928.

The previous prime is 489811961. The next prime is 489811981. The reversal of 489811980 is 89118984.

It is not an unprimeable number, because it can be changed into a prime (489811981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 582690 + ... + 583529.

It is an arithmetic number, because the mean of its divisors is an integer number (32654160).

Almost surely, 2^489811980 is an apocalyptic number.

It is an amenable number.

489811980 is an abundant number, since it is smaller than the sum of its proper divisors (1077587700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

489811980 is a wasteful number, since it uses less digits than its factorization.

489811980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166238 (or 1166236 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 48.

The square root of 489811980 is about 22131.6962748001. The cubic root of 489811980 is about 788.2726666834.

The spelling of 489811980 in words is "four hundred eighty-nine million, eight hundred eleven thousand, nine hundred eighty".