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489382689 = 31712775557
BaseRepresentation
bin11101001010110…
…110001100100001
31021002212012211210
4131022312030201
52000240221224
6120321100333
715061453455
oct3512661441
91232765753
10489382689
11231275504
12117a876a9
137a508573
1448dd0665
152ce6c429
hex1d2b6321

489382689 has 16 divisors (see below), whose sum is σ = 696342528. Its totient is φ = 304641792.

The previous prime is 489382681. The next prime is 489382711. The reversal of 489382689 is 986283984.

It is not a de Polignac number, because 489382689 - 23 = 489382681 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (489382681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31302 + ... + 44255.

It is an arithmetic number, because the mean of its divisors is an integer number (43521408).

Almost surely, 2489382689 is an apocalyptic number.

It is an amenable number.

489382689 is a deficient number, since it is larger than the sum of its proper divisors (206959839).

489382689 is a wasteful number, since it uses less digits than its factorization.

489382689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75704.

The product of its digits is 5971968, while the sum is 57.

The square root of 489382689 is about 22121.9955926223. The cubic root of 489382689 is about 788.0423080387.

The spelling of 489382689 in words is "four hundred eighty-nine million, three hundred eighty-two thousand, six hundred eighty-nine".

Divisors: 1 3 17 51 127 381 2159 6477 75557 226671 1284469 3853407 9595739 28787217 163127563 489382689