8807981 has 16 divisors (see below), whose sum is σ = 10929408. Its totient is φ = 6912000.

The previous prime is 8807977. The next prime is 8807987. The reversal of 8807981 is 1897088.

It is a cyclic number.

It is not a de Polignac number, because 8807981 - 2² = 8807977 is a prime.

It is a super-2 number, since 2×8807981² = 155161058592722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8807987) 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 15 ways as a sum of consecutive naturals, for example, 13421 + ... + 14061.

It is an arithmetic number, because the mean of its divisors is an integer number (683088).

Almost surely, 2^8807981 is an apocalyptic number.

It is an amenable number.

8807981 is a deficient number, since it is larger than the sum of its proper divisors (2121427).

8807981 is a wasteful number, since it uses less digits than its factorization.

8807981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812.

The product of its (nonzero) digits is 32256, while the sum is 41.

The square root of 8807981 is about 2967.8242872515. The cubic root of 8807981 is about 206.5184180779.

The spelling of 8807981 in words is "eight million, eight hundred seven thousand, nine hundred eighty-one".