9871081 has 16 divisors (see below), whose sum is σ = 11213568. Its totient is φ = 8611200.

The previous prime is 9871073. The next prime is 9871093. The reversal of 9871081 is 1801789.

It is a cyclic number.

It is not a de Polignac number, because 9871081 - 2³ = 9871073 is a prime.

It is a super-2 number, since 2×9871081² = 194876480217122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9871031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31381 + ... + 31693.

It is an arithmetic number, because the mean of its divisors is an integer number (700848).

Almost surely, 2^9871081 is an apocalyptic number.

It is an amenable number.

9871081 is a deficient number, since it is larger than the sum of its proper divisors (1342487).

9871081 is a wasteful number, since it uses less digits than its factorization.

9871081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432.

The product of its (nonzero) digits is 4032, while the sum is 34.

The square root of 9871081 is about 3141.8276528161. The cubic root of 9871081 is about 214.5136364929.

The spelling of 9871081 in words is "nine million, eight hundred seventy-one thousand, eighty-one".