489631285 has 16 divisors (see below), whose sum is σ = 690278400. Its totient is φ = 328703040.

The previous prime is 489631279. The next prime is 489631301. The reversal of 489631285 is 582136984.

It is not a de Polignac number, because 489631285 - 2³ = 489631277 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 341685 + ... + 343114.

It is an arithmetic number, because the mean of its divisors is an integer number (43142400).

Almost surely, 2^489631285 is an apocalyptic number.

It is an amenable number.

489631285 is a deficient number, since it is larger than the sum of its proper divisors (200647115).

489631285 is a wasteful number, since it uses less digits than its factorization.

489631285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684828.

The product of its digits is 414720, while the sum is 46.

The square root of 489631285 is about 22127.6136309363. The cubic root of 489631285 is about 788.1757216962.

The spelling of 489631285 in words is "four hundred eighty-nine million, six hundred thirty-one thousand, two hundred eighty-five".