489494985 has 48 divisors (see below), whose sum is σ = 906004608. Its totient is φ = 221068800.

The previous prime is 489494977. The next prime is 489495001. The reversal of 489494985 is 589494984.

It is not a de Polignac number, because 489494985 - 2³ = 489494977 is a prime.

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, 1070877 + ... + 1071333.

It is an arithmetic number, because the mean of its divisors is an integer number (18875096).

Almost surely, 2^489494985 is an apocalyptic number.

It is an amenable number.

489494985 is a deficient number, since it is larger than the sum of its proper divisors (416509623).

489494985 is a wasteful number, since it uses less digits than its factorization.

489494985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674 (or 573 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 60.

The square root of 489494985 is about 22124.5335544052. The cubic root of 489494985 is about 788.1025793650.

Subtracting 489494985 from its reverse (589494984), we obtain a palindrome (99999999).

The spelling of 489494985 in words is "four hundred eighty-nine million, four hundred ninety-four thousand, nine hundred eighty-five".