489965840 has 320 divisors, whose sum is σ = 1538901504. Its totient is φ = 140673024.

The previous prime is 489965837. The next prime is 489965893. The reversal of 489965840 is 48569984.

It is a happy number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 4579067 + ... + 4579173.

Almost surely, 2^489965840 is an apocalyptic number.

489965840 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 489965840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (769450752).

489965840 is an abundant number, since it is smaller than the sum of its proper divisors (1048935664).

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

489965840 is a wasteful number, since it uses less digits than its factorization.

489965840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 53.

The square root of 489965840 is about 22135.1720119813. The cubic root of 489965840 is about 788.3551955859.

The spelling of 489965840 in words is "four hundred eighty-nine million, nine hundred sixty-five thousand, eight hundred forty".