30489 has 4 divisors (see below), whose sum is σ = 40656. Its totient is φ = 20324.

The previous prime is 30469. The next prime is 30491. The reversal of 30489 is 98403.

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, and also an emirpimes, since its reverse is a distinct semiprime: 98403 = 3 ⋅32801.

It is a cyclic number.

It is not a de Polignac number, because 30489 - 2¹² = 26393 is a prime.

It is a D-number.

It is a plaindrome in base 12.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 30489.

It is not an unprimeable number, because it can be changed into a prime (30449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5079 + ... + 5084.

It is an arithmetic number, because the mean of its divisors is an integer number (10164).

2³⁰⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

30489 is a deficient number, since it is larger than the sum of its proper divisors (10167).

30489 is a wasteful number, since it uses less digits than its factorization.

30489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10166.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 30489 is about 174.6109962173. The cubic root of 30489 is about 31.2402422868.

It can be divided in two parts, 304 and 89, that added together give a palindrome (393).

The spelling of 30489 in words is "thirty thousand, four hundred eighty-nine".