489451040 has 144 divisors (see below), whose sum is σ = 1308218688. Its totient is φ = 172643328.

The previous prime is 489451037. The next prime is 489451051. The reversal of 489451040 is 40154984.

It is a happy number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 621527 + ... + 622313.

It is an arithmetic number, because the mean of its divisors is an integer number (9084852).

Almost surely, 2^489451040 is an apocalyptic number.

489451040 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 489451040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (654109344).

489451040 is an abundant number, since it is smaller than the sum of its proper divisors (818767648).

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

489451040 is a wasteful number, since it uses less digits than its factorization.

489451040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851 (or 830 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 489451040 is about 22123.5404038323. The cubic root of 489451040 is about 788.0789943741.

The spelling of 489451040 in words is "four hundred eighty-nine million, four hundred fifty-one thousand, forty".