9986804291 has 2 divisors, whose sum is σ = 9986804292. Its totient is φ = 9986804290.

The previous prime is 9986804251. The next prime is 9986804381. The reversal of 9986804291 is 1924086899.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9986804291 - 2⁶ = 9986804227 is a prime.

It is not a weakly prime, because it can be changed into another prime (9986804251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4993402145 + 4993402146.

It is an arithmetic number, because the mean of its divisors is an integer number (4993402146).

Almost surely, 2^9986804291 is an apocalyptic number.

9986804291 is a deficient number, since it is larger than the sum of its proper divisors (1).

9986804291 is an equidigital number, since it uses as much as digits as its factorization.

9986804291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2239488, while the sum is 56.

The square root of 9986804291 is about 99933.9996747854. Note that the first 3 decimals coincide. The cubic root of 9986804291 is about 2153.4866297910.

The spelling of 9986804291 in words is "nine billion, nine hundred eighty-six million, eight hundred four thousand, two hundred ninety-one".