9985940113 has 2 divisors, whose sum is σ = 9985940114. Its totient is φ = 9985940112.

The previous prime is 9985940099. The next prime is 9985940137. The reversal of 9985940113 is 3110495899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9891694849 + 94245264 = 99457^2 + 9708^2 .

It is a cyclic number.

It is not a de Polignac number, because 9985940113 - 2³³ = 1396005521 is a prime.

It is not a weakly prime, because it can be changed into another prime (9985910113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4992970056 + 4992970057.

It is an arithmetic number, because the mean of its divisors is an integer number (4992970057).

Almost surely, 2^9985940113 is an apocalyptic number.

It is an amenable number.

9985940113 is a deficient number, since it is larger than the sum of its proper divisors (1).

9985940113 is an equidigital number, since it uses as much as digits as its factorization.

9985940113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 349920, while the sum is 49.

The square root of 9985940113 is about 99929.6758375609. The cubic root of 9985940113 is about 2153.4245128416.

The spelling of 9985940113 in words is "nine billion, nine hundred eighty-five million, nine hundred forty thousand, one hundred thirteen".