8021983 has 4 divisors (see below), whose sum is σ = 8093088. Its totient is φ = 7950880.

The previous prime is 8021969. The next prime is 8021989. The reversal of 8021983 is 3891208.

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 8021983 - 2⁹ = 8021471 is a prime.

It is a super-2 number, since 2×8021983² = 128704422504578, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8021989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35383 + ... + 35608.

It is an arithmetic number, because the mean of its divisors is an integer number (2023272).

Almost surely, 2^8021983 is an apocalyptic number.

8021983 is a deficient number, since it is larger than the sum of its proper divisors (71105).

8021983 is a wasteful number, since it uses less digits than its factorization.

8021983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71104.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 8021983 is about 2832.3105408835. The cubic root of 8021983 is about 200.1830241264.

The spelling of 8021983 in words is "eight million, twenty-one thousand, nine hundred eighty-three".