8021843 has 6 divisors (see below), whose sum is σ = 8147916. Its totient is φ = 7897692.

The previous prime is 8021833. The next prime is 8021851. The reversal of 8021843 is 3481208.

It is not a de Polignac number, because 8021843 - 2¹⁸ = 7759699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8021833) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3596 + ... + 5382.

It is an arithmetic number, because the mean of its divisors is an integer number (1357986).

Almost surely, 2^8021843 is an apocalyptic number.

8021843 is a deficient number, since it is larger than the sum of its proper divisors (126073).

8021843 is an equidigital number, since it uses as much as digits as its factorization.

8021843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1921 (or 1854 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 8021843 is about 2832.2858259717. The cubic root of 8021843 is about 200.1818595853.

The spelling of 8021843 in words is "eight million, twenty-one thousand, eight hundred forty-three".