489353985 has 12 divisors (see below), whose sum is σ = 848213652. Its totient is φ = 260988768.

The previous prime is 489353947. The next prime is 489354001. The reversal of 489353985 is 589353984.

It can be written as a sum of positive squares in 2 ways, for example, as 272646144 + 216707841 = 16512^2 + 14721^2 .

It is not a de Polignac number, because 489353985 - 2¹⁹ = 488829697 is a prime.

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, 5437222 + ... + 5437311.

It is an arithmetic number, because the mean of its divisors is an integer number (70684471).

Almost surely, 2^489353985 is an apocalyptic number.

489353985 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

489353985 is a deficient number, since it is larger than the sum of its proper divisors (358859667).

489353985 is a wasteful number, since it uses less digits than its factorization.

489353985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10874544 (or 10874541 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 54.

The square root of 489353985 is about 22121.3468170453. The cubic root of 489353985 is about 788.0269005951.

Subtracting 489353985 from its reverse (589353984), we obtain a palindrome (99999999).

The spelling of 489353985 in words is "four hundred eighty-nine million, three hundred fifty-three thousand, nine hundred eighty-five".