3983021 has 4 divisors (see below), whose sum is σ = 4552032. Its totient is φ = 3414012.

The previous prime is 3983011. The next prime is 3983033. The reversal of 3983021 is 1203893.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 3983021 - 2¹⁸ = 3720877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3983011) 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, 284495 + ... + 284508.

It is an arithmetic number, because the mean of its divisors is an integer number (1138008).

Almost surely, 2^3983021 is an apocalyptic number.

It is an amenable number.

3983021 is a deficient number, since it is larger than the sum of its proper divisors (569011).

3983021 is an equidigital number, since it uses as much as digits as its factorization.

3983021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569010.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 3983021 is about 1995.7507359387. The cubic root of 3983021 is about 158.5151826288.

The spelling of 3983021 in words is "three million, nine hundred eighty-three thousand, twenty-one".