489757689 has 12 divisors (see below), whose sum is σ = 708080100. Its totient is φ = 326204064.

The previous prime is 489757663. The next prime is 489757691. The reversal of 489757689 is 986757984.

489757689 is a `hidden beast` number, since 489 + 7 + 5 + 76 + 89 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5405625 + 484352064 = 2325^2 + 22008^2 .

It is not a de Polignac number, because 489757689 - 2¹³ = 489749497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (489757589) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 14554 + ... + 34515.

It is an arithmetic number, because the mean of its divisors is an integer number (59006675).

Almost surely, 2^489757689 is an apocalyptic number.

It is an amenable number.

489757689 is a deficient number, since it is larger than the sum of its proper divisors (218322411).

489757689 is a wasteful number, since it uses less digits than its factorization.

489757689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50184 (or 50181 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 63.

The square root of 489757689 is about 22130.4696967778. The cubic root of 489757689 is about 788.2435414310.

The spelling of 489757689 in words is "four hundred eighty-nine million, seven hundred fifty-seven thousand, six hundred eighty-nine".