8947881 has 32 divisors (see below), whose sum is σ = 13910400. Its totient is φ = 5679360.

The previous prime is 8947853. The next prime is 8947889. The reversal of 8947881 is 1887498.

It is not a de Polignac number, because 8947881 - 2⁶ = 8947817 is a prime.

It is a super-2 number, since 2×8947881² = 160129148780322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8947889) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65245 + ... + 65381.

It is an arithmetic number, because the mean of its divisors is an integer number (434700).

Almost surely, 2^8947881 is an apocalyptic number.

It is an amenable number.

8947881 is a deficient number, since it is larger than the sum of its proper divisors (4962519).

8947881 is a wasteful number, since it uses less digits than its factorization.

8947881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 240 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The square root of 8947881 is about 2991.3008875738. The cubic root of 8947881 is about 207.6060792099.

The spelling of 8947881 in words is "eight million, nine hundred forty-seven thousand, eight hundred eighty-one".