13847 has 4 divisors (see below), whose sum is σ = 14136. Its totient is φ = 13560.

The previous prime is 13841. The next prime is 13859. The reversal of 13847 is 74831.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13847 - 2⁴ = 13831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13841) 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, 53 + ... + 174.

It is an arithmetic number, because the mean of its divisors is an integer number (3534).

2¹³⁸⁴⁷ is an apocalyptic number.

13847 is a deficient number, since it is larger than the sum of its proper divisors (289).

13847 is an equidigital number, since it uses as much as digits as its factorization.

13847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288.

The product of its digits is 672, while the sum is 23.

The square root of 13847 is about 117.6732764905. The cubic root of 13847 is about 24.0133028103.

Subtracting from 13847 its sum of digits (23), we obtain a cube (13824 = 24³).

It can be divided in two parts, 13 and 847, that multiplied together give a palindrome (11011).

The spelling of 13847 in words is "thirteen thousand, eight hundred forty-seven".