9979006871 has 2 divisors, whose sum is σ = 9979006872. Its totient is φ = 9979006870.

The previous prime is 9979006847. The next prime is 9979006901. The reversal of 9979006871 is 1786009799.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9979006871 - 2¹⁴ = 9978990487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9979206871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4989503435 + 4989503436.

It is an arithmetic number, because the mean of its divisors is an integer number (4989503436).

Almost surely, 2^9979006871 is an apocalyptic number.

9979006871 is a deficient number, since it is larger than the sum of its proper divisors (1).

9979006871 is an equidigital number, since it uses as much as digits as its factorization.

9979006871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1714608, while the sum is 56.

The square root of 9979006871 is about 99894.9792081664. The cubic root of 9979006871 is about 2152.9260229718.

The spelling of 9979006871 in words is "nine billion, nine hundred seventy-nine million, six thousand, eight hundred seventy-one".