13684249 has 4 divisors (see below), whose sum is σ = 13691664. Its totient is φ = 13676836.

The previous prime is 13684219. The next prime is 13684267. The reversal of 13684249 is 94248631.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13684249 - 2⁵ = 13684217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13684219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1494 + ... + 5440.

It is an arithmetic number, because the mean of its divisors is an integer number (3422916).

Almost surely, 2^13684249 is an apocalyptic number.

It is an amenable number.

13684249 is a deficient number, since it is larger than the sum of its proper divisors (7415).

13684249 is an equidigital number, since it uses as much as digits as its factorization.

13684249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7414.

The product of its digits is 41472, while the sum is 37.

The square root of 13684249 is about 3699.2227562016. Note that the first 3 decimals coincide. The cubic root of 13684249 is about 239.1885150972.

The spelling of 13684249 in words is "thirteen million, six hundred eighty-four thousand, two hundred forty-nine".