3823221 has 16 divisors (see below), whose sum is σ = 5405184. Its totient is φ = 2398704.

The previous prime is 3823219. The next prime is 3823223. The reversal of 3823221 is 1223283.

It is an interprime number because it is at equal distance from previous prime (3823219) and next prime (3823223).

It is not a de Polignac number, because 3823221 - 2¹ = 3823219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3823223) 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 15 ways as a sum of consecutive naturals, for example, 4210 + ... + 5036.

It is an arithmetic number, because the mean of its divisors is an integer number (337824).

Almost surely, 2^3823221 is an apocalyptic number.

It is an amenable number.

3823221 is a deficient number, since it is larger than the sum of its proper divisors (1581963).

3823221 is a wasteful number, since it uses less digits than its factorization.

3823221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920.

The product of its digits is 576, while the sum is 21.

The square root of 3823221 is about 1955.3058584273. The cubic root of 3823221 is about 156.3662908145.

The spelling of 3823221 in words is "three million, eight hundred twenty-three thousand, two hundred twenty-one".