489785 has 8 divisors (see below), whose sum is σ = 613440. Its totient is φ = 374704.

The previous prime is 489761. The next prime is 489791. The reversal of 489785 is 587984.

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 489785 - 2⁸ = 489529 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2015 + ... + 2244.

It is an arithmetic number, because the mean of its divisors is an integer number (76680).

2⁴⁸⁹⁷⁸⁵ is an apocalyptic number.

It is an amenable number.

489785 is a deficient number, since it is larger than the sum of its proper divisors (123655).

489785 is a wasteful number, since it uses less digits than its factorization.

489785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4287.

The product of its digits is 80640, while the sum is 41.

The square root of 489785 is about 699.8464117219. The cubic root of 489785 is about 78.8258193111.

The spelling of 489785 in words is "four hundred eighty-nine thousand, seven hundred eighty-five".