489605 has 8 divisors (see below), whose sum is σ = 591864. Its totient is φ = 388800.

The previous prime is 489571. The next prime is 489613. The reversal of 489605 is 506984.

It can be written as a sum of positive squares in 4 ways, for example, as 2401 + 487204 = 49^2 + 698^2 .

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

It is not a de Polignac number, because 489605 - 2¹² = 485509 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

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, 635 + ... + 1175.

It is an arithmetic number, because the mean of its divisors is an integer number (73983).

2⁴⁸⁹⁶⁰⁵ is an apocalyptic number.

It is an amenable number.

489605 is a deficient number, since it is larger than the sum of its proper divisors (102259).

489605 is a wasteful number, since it uses less digits than its factorization.

489605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 489605 is about 699.7178002595. The cubic root of 489605 is about 78.8161617498.

The spelling of 489605 in words is "four hundred eighty-nine thousand, six hundred five".