15489 has 6 divisors (see below), whose sum is σ = 22386. Its totient is φ = 10320.

The previous prime is 15473. The next prime is 15493. The reversal of 15489 is 98451.

15489 is nontrivially palindromic in base 11.

It can be written as a sum of positive squares in only one way, i.e., 14400 + 1089 = 120^2 + 33^2 .

It is not a de Polignac number, because 15489 - 2⁴ = 15473 is a prime.

15489 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 15489.

It is not an unprimeable number, because it can be changed into a prime (15439) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 852 + ... + 869.

It is an arithmetic number, because the mean of its divisors is an integer number (3731).

It is a Proth number, since it is equal to 121 ⋅ 2⁷ + 1 and 121 < 2⁷.

2¹⁵⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

15489 is a deficient number, since it is larger than the sum of its proper divisors (6897).

15489 is a wasteful number, since it uses less digits than its factorization.

15489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1727 (or 1724 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 15489 is about 124.4548110761. The cubic root of 15489 is about 24.9272551997.

It can be divided in two parts, 154 and 89, that added together give a 5-th power (243 = 3⁵).

The spelling of 15489 in words is "fifteen thousand, four hundred eighty-nine".