9840956999 has 2 divisors, whose sum is σ = 9840957000. Its totient is φ = 9840956998.

The previous prime is 9840956989. The next prime is 9840957013. The reversal of 9840956999 is 9996590489.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9840956999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9840956989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4920478499 + 4920478500.

It is an arithmetic number, because the mean of its divisors is an integer number (4920478500).

Almost surely, 2^9840956999 is an apocalyptic number.

9840956999 is a deficient number, since it is larger than the sum of its proper divisors (1).

9840956999 is an equidigital number, since it uses as much as digits as its factorization.

9840956999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56687040, while the sum is 68.

The square root of 9840956999 is about 99201.5977643505. The cubic root of 9840956999 is about 2142.9520065214.

The spelling of 9840956999 in words is "nine billion, eight hundred forty million, nine hundred fifty-six thousand, nine hundred ninety-nine".