489565983 has 8 divisors (see below), whose sum is σ = 691152048. Its totient is φ = 307178624.

The previous prime is 489565963. The next prime is 489565987. The reversal of 489565983 is 389565984.

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 489565983 - 2¹² = 489561887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489565987) 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, 4799616 + ... + 4799717.

It is an arithmetic number, because the mean of its divisors is an integer number (86394006).

Almost surely, 2^489565983 is an apocalyptic number.

489565983 is a deficient number, since it is larger than the sum of its proper divisors (201586065).

489565983 is a wasteful number, since it uses less digits than its factorization.

489565983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9599353.

The product of its digits is 9331200, while the sum is 57.

The square root of 489565983 is about 22126.1380046315. The cubic root of 489565983 is about 788.1406805398.

Subtracting from 489565983 its reverse (389565984), we obtain a palindrome (99999999).

The spelling of 489565983 in words is "four hundred eighty-nine million, five hundred sixty-five thousand, nine hundred eighty-three".