13044643 has 4 divisors (see below), whose sum is σ = 13053688. Its totient is φ = 13035600.

The previous prime is 13044637. The next prime is 13044671. The reversal of 13044643 is 34644031.

It is a happy number.

13044643 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 brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13044643 - 2⁹ = 13044131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13044613) 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, 1821 + ... + 5422.

It is an arithmetic number, because the mean of its divisors is an integer number (3263422).

Almost surely, 2^13044643 is an apocalyptic number.

13044643 is a deficient number, since it is larger than the sum of its proper divisors (9045).

13044643 is an equidigital number, since it uses as much as digits as its factorization.

13044643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9044.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 13044643 is about 3611.7368398044. The cubic root of 13044643 is about 235.4023167313.

Adding to 13044643 its reverse (34644031), we get a palindrome (47688674).

The spelling of 13044643 in words is "thirteen million, forty-four thousand, six hundred forty-three".