9871796927 has 2 divisors, whose sum is σ = 9871796928. Its totient is φ = 9871796926.

The previous prime is 9871796849. The next prime is 9871796969. The reversal of 9871796927 is 7296971789.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9871796927 - 2¹² = 9871792831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9871796027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4935898463 + 4935898464.

It is an arithmetic number, because the mean of its divisors is an integer number (4935898464).

Almost surely, 2^9871796927 is an apocalyptic number.

9871796927 is a deficient number, since it is larger than the sum of its proper divisors (1).

9871796927 is an equidigital number, since it uses as much as digits as its factorization.

9871796927 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24004512, while the sum is 65.

The square root of 9871796927 is about 99356.9168553453. The cubic root of 9871796927 is about 2145.1882242914.

The spelling of 9871796927 in words is "nine billion, eight hundred seventy-one million, seven hundred ninety-six thousand, nine hundred twenty-seven".