489565985 has 8 divisors (see below), whose sum is σ = 596247936. Its totient is φ = 385806960.

The previous prime is 489565963. The next prime is 489565987. The reversal of 489565985 is 589565984.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 489565985 - 2¹⁴ = 489549601 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (489565987) 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, 730361 + ... + 731030.

It is an arithmetic number, because the mean of its divisors is an integer number (74530992).

Almost surely, 2^489565985 is an apocalyptic number.

It is an amenable number.

489565985 is a deficient number, since it is larger than the sum of its proper divisors (106681951).

489565985 is a wasteful number, since it uses less digits than its factorization.

489565985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461463.

The product of its digits is 15552000, while the sum is 59.

The square root of 489565985 is about 22126.1380498270. The cubic root of 489565985 is about 788.1406816130.

Subtracting 489565985 from its reverse (589565984), we obtain a palindrome (99999999).

The spelling of 489565985 in words is "four hundred eighty-nine million, five hundred sixty-five thousand, nine hundred eighty-five".