13806443 has 4 divisors (see below), whose sum is σ = 15778800. Its totient is φ = 11834088.

The previous prime is 13806433. The next prime is 13806451. The reversal of 13806443 is 34460831.

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

It is not a de Polignac number, because 13806443 - 2¹⁴ = 13790059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13806433) 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, 986168 + ... + 986181.

It is an arithmetic number, because the mean of its divisors is an integer number (3944700).

Almost surely, 2^13806443 is an apocalyptic number.

13806443 is a deficient number, since it is larger than the sum of its proper divisors (1972357).

13806443 is an equidigital number, since it uses as much as digits as its factorization.

13806443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972356.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 13806443 is about 3715.7022216534. The cubic root of 13806443 is about 239.8983539472.

The spelling of 13806443 in words is "thirteen million, eight hundred six thousand, four hundred forty-three".