13686469 has 4 divisors (see below), whose sum is σ = 14128000. Its totient is φ = 13244940.

The previous prime is 13686443. The next prime is 13686473. The reversal of 13686469 is 96468631.

13686469 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, and also an emirpimes, since its reverse is a distinct semiprime: 96468631 = 7 ⋅13781233.

It is a cyclic number.

It is not a de Polignac number, because 13686469 - 2⁹ = 13685957 is a prime.

It is a super-2 number, since 2×13686469² = 374638867375922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13686269) 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, 220719 + ... + 220780.

It is an arithmetic number, because the mean of its divisors is an integer number (3532000).

Almost surely, 2^13686469 is an apocalyptic number.

It is an amenable number.

13686469 is a deficient number, since it is larger than the sum of its proper divisors (441531).

13686469 is an equidigital number, since it uses as much as digits as its factorization.

13686469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441530.

The product of its digits is 186624, while the sum is 43.

The square root of 13686469 is about 3699.5228070658. The cubic root of 13686469 is about 239.2014489403.

The spelling of 13686469 in words is "thirteen million, six hundred eighty-six thousand, four hundred sixty-nine".