4443381 has 6 divisors (see below), whose sum is σ = 6418230. Its totient is φ = 2962248.

The previous prime is 4443379. The next prime is 4443391. The reversal of 4443381 is 1833444.

It can be written as a sum of positive squares in only one way, i.e., 2387025 + 2056356 = 1545^2 + 1434^2 .

It is not a de Polignac number, because 4443381 - 2¹ = 4443379 is a prime.

It is a super-4 number, since 4×4443381⁴ (a number of 28 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4443311) 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 5 ways as a sum of consecutive naturals, for example, 246846 + ... + 246863.

It is an arithmetic number, because the mean of its divisors is an integer number (1069705).

Almost surely, 2^4443381 is an apocalyptic number.

It is an amenable number.

4443381 is a deficient number, since it is larger than the sum of its proper divisors (1974849).

4443381 is a wasteful number, since it uses less digits than its factorization.

4443381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493715 (or 493712 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 4443381 is about 2107.9328736940. The cubic root of 4443381 is about 164.4010238450.

The spelling of 4443381 in words is "four million, four hundred forty-three thousand, three hundred eighty-one".