489645580 has 24 divisors (see below), whose sum is σ = 1082375280. Its totient is φ = 185549760.

The previous prime is 489645557. The next prime is 489645587. The reversal of 489645580 is 85546984.

It is not an unprimeable number, because it can be changed into a prime (489645587) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 643891 + ... + 644650.

It is an arithmetic number, because the mean of its divisors is an integer number (45098970).

Almost surely, 2^489645580 is an apocalyptic number.

It is an amenable number.

489645580 is an abundant number, since it is smaller than the sum of its proper divisors (592729700).

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

489645580 is a wasteful number, since it uses less digits than its factorization.

489645580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288569 (or 1288567 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 49.

The square root of 489645580 is about 22127.9366412687. The cubic root of 489645580 is about 788.1833920001.

The spelling of 489645580 in words is "four hundred eighty-nine million, six hundred forty-five thousand, five hundred eighty".