9987204113 has 2 divisors, whose sum is σ = 9987204114. Its totient is φ = 9987204112.

The previous prime is 9987204083. The next prime is 9987204151. The reversal of 9987204113 is 3114027899.

9987204113 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9058661329 + 928542784 = 95177^2 + 30472^2 .

It is an emirp because it is prime and its reverse (3114027899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9987204113 - 2⁸ = 9987203857 is a prime.

It is not a weakly prime, because it can be changed into another prime (9987204193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4993602056 + 4993602057.

It is an arithmetic number, because the mean of its divisors is an integer number (4993602057).

Almost surely, 2^9987204113 is an apocalyptic number.

It is an amenable number.

9987204113 is a deficient number, since it is larger than the sum of its proper divisors (1).

9987204113 is an equidigital number, since it uses as much as digits as its factorization.

9987204113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 9987204113 is about 99936.0000850544. Note that the first 4 decimals coincide. The cubic root of 9987204113 is about 2153.5153677074.

The spelling of 9987204113 in words is "nine billion, nine hundred eighty-seven million, two hundred four thousand, one hundred thirteen".