9489 has 4 divisors (see below), whose sum is σ = 12656. Its totient is φ = 6324.

The previous prime is 9479. The next prime is 9491. The reversal of 9489 is 9849.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 9489 - 2⁴ = 9473 is a prime.

It is a super-2 number, since 2×9489² = 180082242, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1579 + ... + 1584.

It is an arithmetic number, because the mean of its divisors is an integer number (3164).

2⁹⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

9489 is a deficient number, since it is larger than the sum of its proper divisors (3167).

9489 is a wasteful number, since it uses less digits than its factorization.

9489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3166.

The product of its digits is 2592, while the sum is 30.

The square root of 9489 is about 97.4114982946. The cubic root of 9489 is about 21.1709403678.

The spelling of 9489 in words is "nine thousand, four hundred eighty-nine".