13871443 has 4 divisors (see below), whose sum is σ = 13879648. Its totient is φ = 13863240.

The previous prime is 13871437. The next prime is 13871447. The reversal of 13871443 is 34417831.

It is a semiprime because it is the product of two primes, 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 13871443 - 2¹³ = 13863251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13871447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 528 + ... + 5293.

It is an arithmetic number, because the mean of its divisors is an integer number (3469912).

Almost surely, 2^13871443 is an apocalyptic number.

13871443 is a deficient number, since it is larger than the sum of its proper divisors (8205).

13871443 is an equidigital number, since it uses as much as digits as its factorization.

13871443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8204.

The product of its digits is 8064, while the sum is 31.

The square root of 13871443 is about 3724.4386154158. The cubic root of 13871443 is about 240.2742409118.

The spelling of 13871443 in words is "thirteen million, eight hundred seventy-one thousand, four hundred forty-three".