13847321 has 4 divisors (see below), whose sum is σ = 13872144. Its totient is φ = 13822500.

The previous prime is 13847303. The next prime is 13847329. The reversal of 13847321 is 12374831.

13847321 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: 12374831 = 7 ⋅1767833.

It is a cyclic number.

It is not a de Polignac number, because 13847321 - 2¹⁸ = 13585177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13847329) 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, 11555 + ... + 12696.

It is an arithmetic number, because the mean of its divisors is an integer number (3468036).

Almost surely, 2^13847321 is an apocalyptic number.

It is an amenable number.

13847321 is a deficient number, since it is larger than the sum of its proper divisors (24823).

13847321 is an equidigital number, since it uses as much as digits as its factorization.

13847321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24822.

The product of its digits is 4032, while the sum is 29.

The square root of 13847321 is about 3721.1988659570. The cubic root of 13847321 is about 240.1348836699.

The spelling of 13847321 in words is "thirteen million, eight hundred forty-seven thousand, three hundred twenty-one".