9840959999 has 4 divisors (see below), whose sum is σ = 10597956936. Its totient is φ = 9083963064.

The previous prime is 9840959971. The next prime is 9840960001. The reversal of 9840959999 is 9999590489.

9840959999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9840959999 - 2⁸ = 9840959743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9840956999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378498449 + ... + 378498474.

It is an arithmetic number, because the mean of its divisors is an integer number (2649489234).

Almost surely, 2^9840959999 is an apocalyptic number.

9840959999 is a deficient number, since it is larger than the sum of its proper divisors (756996937).

9840959999 is a wasteful number, since it uses less digits than its factorization.

9840959999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756996936.

The product of its (nonzero) digits is 85030560, while the sum is 71.

The square root of 9840959999 is about 99201.6128850736. The cubic root of 9840959999 is about 2142.9522242799.

The spelling of 9840959999 in words is "nine billion, eight hundred forty million, nine hundred fifty-nine thousand, nine hundred ninety-nine".