489545856 has 96 divisors (see below), whose sum is σ = 1460986800. Its totient is φ = 163171584.

The previous prime is 489545809. The next prime is 489545867. The reversal of 489545856 is 658545984.

489545856 is a `hidden beast` number, since 4 + 8 + 9 + 54 + 585 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Smith number, since the sum of its digits (54) 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 (54).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23235 + ... + 38973.

Almost surely, 2^489545856 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 489545856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (730493400).

489545856 is an abundant number, since it is smaller than the sum of its proper divisors (971440944).

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

489545856 is an equidigital number, since it uses as much as digits as its factorization.

489545856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15768 (or 15744 counting only the distinct ones).

The product of its digits is 6912000, while the sum is 54.

The square root of 489545856 is about 22125.6831758931. The cubic root of 489545856 is about 788.1298797316.

The spelling of 489545856 in words is "four hundred eighty-nine million, five hundred forty-five thousand, eight hundred fifty-six".