489758640 has 160 divisors (see below), whose sum is σ = 1782266880. Its totient is φ = 108905472.

The previous prime is 489758623. The next prime is 489758651. The reversal of 489758640 is 46857984.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58221 + ... + 66099.

It is an arithmetic number, because the mean of its divisors is an integer number (11139168).

Almost surely, 2^489758640 is an apocalyptic number.

489758640 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 489758640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (891133440).

489758640 is an abundant number, since it is smaller than the sum of its proper divisors (1292508240).

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

489758640 is a wasteful number, since it uses less digits than its factorization.

489758640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7939 (or 7933 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 51.

The square root of 489758640 is about 22130.4911829810. The cubic root of 489758640 is about 788.2440516283.

The spelling of 489758640 in words is "four hundred eighty-nine million, seven hundred fifty-eight thousand, six hundred forty".