8021443 has 4 divisors (see below), whose sum is σ = 8192160. Its totient is φ = 7850728.

The previous prime is 8021413. The next prime is 8021471. The reversal of 8021443 is 3441208.

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 8021443 - 2⁹ = 8020931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8021413) 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, 85288 + ... + 85381.

It is an arithmetic number, because the mean of its divisors is an integer number (2048040).

Almost surely, 2^8021443 is an apocalyptic number.

8021443 is a deficient number, since it is larger than the sum of its proper divisors (170717).

8021443 is a wasteful number, since it uses less digits than its factorization.

8021443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170716.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 8021443 is about 2832.2152107494. The cubic root of 8021443 is about 200.1785322504.

It can be divided in two parts, 8021 and 443, that added together give a square (8464 = 92²).

The spelling of 8021443 in words is "eight million, twenty-one thousand, four hundred forty-three".