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13489 = 74147
BaseRepresentation
bin11010010110001
3200111121
43102301
5412424
6142241
754220
oct32261
920447
1013489
11a153
127981
1361a8
144cb7
153ee4
hex34b1

13489 has 8 divisors (see below), whose sum is σ = 16128. Its totient is φ = 11040.

The previous prime is 13487. The next prime is 13499. The reversal of 13489 is 98431.

13489 is nontrivially palindromic in base 6.

13489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 13489 - 21 = 13487 is a prime.

13489 is a lucky number.

It is a plaindrome in base 10.

It is a nialpdrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (13487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264 + ... + 310.

It is an arithmetic number, because the mean of its divisors is an integer number (2016).

213489 is an apocalyptic number.

It is an amenable number.

13489 is a deficient number, since it is larger than the sum of its proper divisors (2639).

13489 is an equidigital number, since it uses as much as digits as its factorization.

13489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95.

The product of its digits is 864, while the sum is 25.

The square root of 13489 is about 116.1421542766. The cubic root of 13489 is about 23.8045468327.

The spelling of 13489 in words is "thirteen thousand, four hundred eighty-nine".

Divisors: 1 7 41 47 287 329 1927 13489