3844221 has 4 divisors (see below), whose sum is σ = 5125632. Its totient is φ = 2562812.

The previous prime is 3844199. The next prime is 3844229. The reversal of 3844221 is 1224483.

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 a cyclic number.

It is not a de Polignac number, because 3844221 - 2¹⁰ = 3843197 is a prime.

It is an Ulam number.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 3844191 and 3844200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3844229) 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, 640701 + ... + 640706.

It is an arithmetic number, because the mean of its divisors is an integer number (1281408).

Almost surely, 2^3844221 is an apocalyptic number.

It is an amenable number.

3844221 is a deficient number, since it is larger than the sum of its proper divisors (1281411).

3844221 is a wasteful number, since it uses less digits than its factorization.

3844221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1281410.

The product of its digits is 1536, while the sum is 24.

The square root of 3844221 is about 1960.6685084430. The cubic root of 3844221 is about 156.6520619151.

The spelling of 3844221 in words is "three million, eight hundred forty-four thousand, two hundred twenty-one".