9994871 has 2 divisors, whose sum is σ = 9994872. Its totient is φ = 9994870.

The previous prime is 9994867. The next prime is 9994913. The reversal of 9994871 is 1784999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9994871 - 2² = 9994867 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9994801) 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 as a sum of consecutive naturals, namely, 4997435 + 4997436.

It is an arithmetic number, because the mean of its divisors is an integer number (4997436).

Almost surely, 2^9994871 is an apocalyptic number.

9994871 is a deficient number, since it is larger than the sum of its proper divisors (1).

9994871 is an equidigital number, since it uses as much as digits as its factorization.

9994871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 47.

The square root of 9994871 is about 3161.4665900496. The cubic root of 9994871 is about 215.4066290523.

The spelling of 9994871 in words is "nine million, nine hundred ninety-four thousand, eight hundred seventy-one".