8856981 has 12 divisors (see below), whose sum is σ = 14621152. Its totient is φ = 5061096.

The previous prime is 8856971. The next prime is 8856997. The reversal of 8856981 is 1896588.

8856981 is a `hidden beast` number, since 8 + 8 + 569 + 81 = 666.

It is not a de Polignac number, because 8856981 - 2¹⁸ = 8594837 is a prime.

It is a super-2 number, since 2×8856981² = 156892224868722, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8856901) 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 11 ways as a sum of consecutive naturals, for example, 70231 + ... + 70356.

Almost surely, 2^8856981 is an apocalyptic number.

It is an amenable number.

8856981 is a deficient number, since it is larger than the sum of its proper divisors (5764171).

8856981 is a wasteful number, since it uses less digits than its factorization.

8856981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140600 (or 140597 counting only the distinct ones).

The product of its digits is 138240, while the sum is 45.

The square root of 8856981 is about 2976.0680435770. The cubic root of 8856981 is about 206.9006734840.

The spelling of 8856981 in words is "eight million, eight hundred fifty-six thousand, nine hundred eighty-one".