8843981 has 4 divisors (see below), whose sum is σ = 8882172. Its totient is φ = 8805792.

The previous prime is 8843917. The next prime is 8843993. The reversal of 8843981 is 1893488.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 749956 + 8094025 = 866^2 + 2845^2 .

It is a cyclic number.

It is not a de Polignac number, because 8843981 - 2⁶ = 8843917 is a prime.

It is a super-2 number, since 2×8843981² = 156431999856722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8843381) 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, 18746 + ... + 19211.

It is an arithmetic number, because the mean of its divisors is an integer number (2220543).

Almost surely, 2^8843981 is an apocalyptic number.

It is an amenable number.

8843981 is a deficient number, since it is larger than the sum of its proper divisors (38191).

8843981 is a wasteful number, since it uses less digits than its factorization.

8843981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38190.

The product of its digits is 55296, while the sum is 41.

The square root of 8843981 is about 2973.8831517059. The cubic root of 8843981 is about 206.7993964692.

The spelling of 8843981 in words is "eight million, eight hundred forty-three thousand, nine hundred eighty-one".