489321984 has 40 divisors (see below), whose sum is σ = 1303588440. Its totient is φ = 163106816.

The previous prime is 489321947. The next prime is 489322007. The reversal of 489321984 is 489123984.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157749 + ... + 160820.

It is an arithmetic number, because the mean of its divisors is an integer number (32589711).

Almost surely, 2^489321984 is an apocalyptic number.

It is an amenable number.

489321984 is an abundant number, since it is smaller than the sum of its proper divisors (814266456).

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

489321984 is an equidigital number, since it uses as much as digits as its factorization.

489321984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318590 (or 318574 counting only the distinct ones).

The product of its digits is 497664, while the sum is 48.

The square root of 489321984 is about 22120.6234993501. The cubic root of 489321984 is about 788.0097227107.

The spelling of 489321984 in words is "four hundred eighty-nine million, three hundred twenty-one thousand, nine hundred eighty-four".