489408660 has 144 divisors (see below), whose sum is σ = 1608297600. Its totient is φ = 119750400.

The previous prime is 489408649. The next prime is 489408709. The reversal of 489408660 is 66804984.

It is a happy number.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 465135 + ... + 466185.

Almost surely, 2^489408660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 489408660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (804148800).

489408660 is an abundant number, since it is smaller than the sum of its proper divisors (1118888940).

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

489408660 is a wasteful number, since it uses less digits than its factorization.

489408660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278 (or 1273 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 489408660 is about 22122.5825797984. The cubic root of 489408660 is about 788.0562479711.

It can be divided in two parts, 48940 and 8660, that added together give a square (57600 = 240²).

The spelling of 489408660 in words is "four hundred eighty-nine million, four hundred eight thousand, six hundred sixty".