4221944 has 16 divisors (see below), whose sum is σ = 8028720. Its totient is φ = 2080960.

The previous prime is 4221941. The next prime is 4221953. The reversal of 4221944 is 4491224.

It is a super-2 number, since 2×4221944² = 35649622278272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3149 + ... + 4284.

It is an arithmetic number, because the mean of its divisors is an integer number (501795).

Almost surely, 2^4221944 is an apocalyptic number.

It is an amenable number.

4221944 is a deficient number, since it is larger than the sum of its proper divisors (3806776).

4221944 is a wasteful number, since it uses less digits than its factorization.

4221944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7510 (or 7506 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

The square root of 4221944 is about 2054.7369661346. The cubic root of 4221944 is about 161.6233693289.

The spelling of 4221944 in words is "four million, two hundred twenty-one thousand, nine hundred forty-four".