489993 has 8 divisors (see below), whose sum is σ = 746688. Its totient is φ = 279984.

The previous prime is 489989. The next prime is 490001. The reversal of 489993 is 399984.

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

It is not a de Polignac number, because 489993 - 2² = 489989 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (489913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11646 + ... + 11687.

It is an arithmetic number, because the mean of its divisors is an integer number (93336).

2⁴⁸⁹⁹⁹³ is an apocalyptic number.

It is an amenable number.

489993 is a deficient number, since it is larger than the sum of its proper divisors (256695).

489993 is a wasteful number, since it uses less digits than its factorization.

489993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23343.

The product of its digits is 69984, while the sum is 42.

The square root of 489993 is about 699.9949999821. The cubic root of 489993 is about 78.8369762133.

Subtracting from 489993 its reverse (399984), we obtain a palindrome (90009).

The spelling of 489993 in words is "four hundred eighty-nine thousand, nine hundred ninety-three".