9984871 has 8 divisors (see below), whose sum is σ = 10800944. Its totient is φ = 9175680.

The previous prime is 9984869. The next prime is 9984881. The reversal of 9984871 is 1784899.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9984871 - 2¹ = 9984869 is a prime.

It is a Duffinian number.

9984871 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9984811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1540 + ... + 4726.

It is an arithmetic number, because the mean of its divisors is an integer number (1350118).

Almost surely, 2^9984871 is an apocalyptic number.

9984871 is a deficient number, since it is larger than the sum of its proper divisors (816073).

9984871 is a wasteful number, since it uses less digits than its factorization.

9984871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3441.

The product of its digits is 145152, while the sum is 46.

The square root of 9984871 is about 3159.8846497934. The cubic root of 9984871 is about 215.3347660244.

The spelling of 9984871 in words is "nine million, nine hundred eighty-four thousand, eight hundred seventy-one".