489640536 has 432 divisors, whose sum is σ = 1797606720. Its totient is φ = 119750400.

The previous prime is 489640523. The next prime is 489640561. The reversal of 489640536 is 635046984.

It is a junction number, because it is equal to n+sod(n) for n = 489640491 and 489640500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 13233510 + ... + 13233546.

Almost surely, 2^489640536 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 489640536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (898803360).

489640536 is an abundant number, since it is smaller than the sum of its proper divisors (1307966184).

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

489640536 is a wasteful number, since it uses less digits than its factorization.

489640536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 489640536 is about 22127.8226674022. The cubic root of 489640536 is about 788.1806855454.

The spelling of 489640536 in words is "four hundred eighty-nine million, six hundred forty thousand, five hundred thirty-six".