9943109985 has 16 divisors (see below), whose sum is σ = 15913848960. Its totient is φ = 5301367680.

The previous prime is 9943109959. The next prime is 9943110017. The reversal of 9943109985 is 5899013499.

It is not a de Polignac number, because 9943109985 - 2⁷ = 9943109857 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50076 + ... + 149645.

It is an arithmetic number, because the mean of its divisors is an integer number (994615560).

Almost surely, 2^9943109985 is an apocalyptic number.

It is an amenable number.

9943109985 is a deficient number, since it is larger than the sum of its proper divisors (5970738975).

9943109985 is a wasteful number, since it uses less digits than its factorization.

9943109985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203048.

The product of its (nonzero) digits is 3149280, while the sum is 57.

The square root of 9943109985 is about 99715.1442108971. The cubic root of 9943109985 is about 2150.3413905339.

The spelling of 9943109985 in words is "nine billion, nine hundred forty-three million, one hundred nine thousand, nine hundred eighty-five".