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BaseRepresentation
bin11000010110101
3122002211
43002311
5344334
6133421
751232
oct30265
918084
1012469
119406
127271
1358a2
144789
153a64
hex30b5

12469 has 4 divisors (see below), whose sum is σ = 12844. Its totient is φ = 12096.

The previous prime is 12457. The next prime is 12473. The reversal of 12469 is 96421.

12469 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 an emirpimes, since its reverse is a distinct semiprime: 96421 = 137417.

It can be written as a sum of positive squares in 2 ways, for example, as 7569 + 4900 = 87^2 + 70^2 .

It is a cyclic number.

It is not a de Polignac number, because 12469 - 25 = 12437 is a prime.

It is a super-2 number, since 2×124692 = 310951922, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 10 and base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12409) 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, 132 + ... + 205.

It is an arithmetic number, because the mean of its divisors is an integer number (3211).

212469 is an apocalyptic number.

It is an amenable number.

12469 is a deficient number, since it is larger than the sum of its proper divisors (375).

12469 is an equidigital number, since it uses as much as digits as its factorization.

12469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374.

The product of its digits is 432, while the sum is 22.

The square root of 12469 is about 111.6646765992. The cubic root of 12469 is about 23.1887430525.

The spelling of 12469 in words is "twelve thousand, four hundred sixty-nine".

Divisors: 1 37 337 12469