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13389 = 34463
BaseRepresentation
bin11010001001101
3200100220
43101031
5412024
6141553
754015
oct32115
920326
1013389
11a072
1278b9
13612c
144c45
153e79
hex344d

13389 has 4 divisors (see below), whose sum is σ = 17856. Its totient is φ = 8924.

The previous prime is 13381. The next prime is 13397. The reversal of 13389 is 98331.

13389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 an interprime number because it is at equal distance from previous prime (13381) and next prime (13397).

It is a cyclic number.

It is not a de Polignac number, because 13389 - 23 = 13381 is a prime.

It is a D-number.

It is a plaindrome in base 10 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13381) 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 3 ways as a sum of consecutive naturals, for example, 2229 + ... + 2234.

It is an arithmetic number, because the mean of its divisors is an integer number (4464).

213389 is an apocalyptic number.

It is an amenable number.

13389 is a deficient number, since it is larger than the sum of its proper divisors (4467).

13389 is an equidigital number, since it uses as much as digits as its factorization.

13389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4466.

The product of its digits is 648, while the sum is 24.

The square root of 13389 is about 115.7108465097. The cubic root of 13389 is about 23.7455762767.

It can be divided in two parts, 133 and 89, that added together give a palindrome (222).

The spelling of 13389 in words is "thirteen thousand, three hundred eighty-nine".

Divisors: 1 3 4463 13389