489647 has 8 divisors (see below), whose sum is σ = 520800. Its totient is φ = 459360.

The previous prime is 489631. The next prime is 489653. The reversal of 489647 is 746984.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 489647 - 2⁴ = 489631 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 489647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1229 + ... + 1577.

It is an arithmetic number, because the mean of its divisors is an integer number (65100).

2⁴⁸⁹⁶⁴⁷ is an apocalyptic number.

489647 is a deficient number, since it is larger than the sum of its proper divisors (31153).

489647 is a wasteful number, since it uses less digits than its factorization.

489647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433.

The product of its digits is 48384, while the sum is 38.

The square root of 489647 is about 699.7478117150. The cubic root of 489647 is about 78.8184153925.

The spelling of 489647 in words is "four hundred eighty-nine thousand, six hundred forty-seven".