489889071840 has 432 divisors, whose sum is σ = 1894577528592. Its totient is φ = 106079404032.

The previous prime is 489889071829. The next prime is 489889071857. The reversal of 489889071840 is 48170988984.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 8461872 + ... + 8519568.

It is an arithmetic number, because the mean of its divisors is an integer number (4385596131).

Almost surely, 2^489889071840 is an apocalyptic number.

489889071840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 489889071840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (947288764296).

489889071840 is an abundant number, since it is smaller than the sum of its proper divisors (1404688456752).

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

489889071840 is a wasteful number, since it uses less digits than its factorization.

489889071840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57767 (or 57733 counting only the distinct ones).

The product of its (nonzero) digits is 37158912, while the sum is 66.

The spelling of 489889071840 in words is "four hundred eighty-nine billion, eight hundred eighty-nine million, seventy-one thousand, eight hundred forty".