9986804227 has 2 divisors, whose sum is σ = 9986804228. Its totient is φ = 9986804226.

The previous prime is 9986804209. The next prime is 9986804239. The reversal of 9986804227 is 7224086899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9986804227 - 2⁷ = 9986804099 is a prime.

It is not a weakly prime, because it can be changed into another prime (9986804627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4993402113 + 4993402114.

It is an arithmetic number, because the mean of its divisors is an integer number (4993402114).

Almost surely, 2^9986804227 is an apocalyptic number.

9986804227 is a deficient number, since it is larger than the sum of its proper divisors (1).

9986804227 is an equidigital number, since it uses as much as digits as its factorization.

9986804227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3483648, while the sum is 55.

The square root of 9986804227 is about 99933.9993545740. Note that the first 3 decimals coincide. The cubic root of 9986804227 is about 2153.4866251908.

The spelling of 9986804227 in words is "nine billion, nine hundred eighty-six million, eight hundred four thousand, two hundred twenty-seven".