8821881 has 12 divisors (see below), whose sum is σ = 12952420. Its totient is φ = 5784480.

The previous prime is 8821877. The next prime is 8821889. The reversal of 8821881 is 1881288.

It is a happy number.

8821881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1071225 + 7750656 = 1035^2 + 2784^2 .

It is not a de Polignac number, because 8821881 - 2² = 8821877 is a prime.

It is a super-2 number, since 2×8821881² = 155651168756322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8821889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7486 + ... + 8583.

Almost surely, 2^8821881 is an apocalyptic number.

It is an amenable number.

8821881 is a deficient number, since it is larger than the sum of its proper divisors (4130539).

8821881 is a wasteful number, since it uses less digits than its factorization.

8821881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16136 (or 16133 counting only the distinct ones).

The product of its digits is 8192, while the sum is 36.

The square root of 8821881 is about 2970.1651469237. The cubic root of 8821881 is about 206.6269975312.

The spelling of 8821881 in words is "eight million, eight hundred twenty-one thousand, eight hundred eighty-one".