489891072 has 144 divisors (see below), whose sum is σ = 1438714368. Its totient is φ = 146749440.

The previous prime is 489891071. The next prime is 489891097. The reversal of 489891072 is 270198984.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489891071) 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 15 ways as a sum of consecutive naturals, for example, 869863 + ... + 870425.

It is an arithmetic number, because the mean of its divisors is an integer number (9991072).

Almost surely, 2^489891072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 489891072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (719357184).

489891072 is an abundant number, since it is smaller than the sum of its proper divisors (948823296).

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

489891072 is a wasteful number, since it uses less digits than its factorization.

489891072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696 (or 682 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 489891072 is about 22133.4830517025. The cubic root of 489891072 is about 788.3150929672.

The spelling of 489891072 in words is "four hundred eighty-nine million, eight hundred ninety-one thousand, seventy-two".