9840959971 has 2 divisors, whose sum is σ = 9840959972. Its totient is φ = 9840959970.

The previous prime is 9840959897. The next prime is 9840960001. The reversal of 9840959971 is 1799590489.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9840959971 - 2⁹ = 9840959459 is a prime.

It is not a weakly prime, because it can be changed into another prime (9840954971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4920479985 + 4920479986.

It is an arithmetic number, because the mean of its divisors is an integer number (4920479986).

Almost surely, 2^9840959971 is an apocalyptic number.

9840959971 is a deficient number, since it is larger than the sum of its proper divisors (1).

9840959971 is an equidigital number, since it uses as much as digits as its factorization.

9840959971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7348320, while the sum is 61.

The square root of 9840959971 is about 99201.6127439469. The cubic root of 9840959971 is about 2142.9522222475.

The spelling of 9840959971 in words is "nine billion, eight hundred forty million, nine hundred fifty-nine thousand, nine hundred seventy-one".