8981871 has 4 divisors (see below), whose sum is σ = 11975832. Its totient is φ = 5987912.

The previous prime is 8981867. The next prime is 8981873. The reversal of 8981871 is 1781898.

8981871 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 8981871 - 2² = 8981867 is a prime.

8981871 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8981873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1496976 + ... + 1496981.

It is an arithmetic number, because the mean of its divisors is an integer number (2993958).

Almost surely, 2^8981871 is an apocalyptic number.

8981871 is a deficient number, since it is larger than the sum of its proper divisors (2993961).

8981871 is a wasteful number, since it uses less digits than its factorization.

8981871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2993960.

The product of its digits is 32256, while the sum is 42.

The square root of 8981871 is about 2996.9769768885. The cubic root of 8981871 is about 207.8686223494.

The spelling of 8981871 in words is "eight million, nine hundred eighty-one thousand, eight hundred seventy-one".