9943109959 has 2 divisors, whose sum is σ = 9943109960. Its totient is φ = 9943109958.

The previous prime is 9943109941. The next prime is 9943110017. The reversal of 9943109959 is 9599013499.

It is an a-pointer prime, because the next prime (9943110017) can be obtained adding 9943109959 to its sum of digits (58).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9943109959 - 2⁷ = 9943109831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9943109909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4971554979 + 4971554980.

It is an arithmetic number, because the mean of its divisors is an integer number (4971554980).

Almost surely, 2^9943109959 is an apocalyptic number.

9943109959 is a deficient number, since it is larger than the sum of its proper divisors (1).

9943109959 is an equidigital number, since it uses as much as digits as its factorization.

9943109959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3542940, while the sum is 58.

The square root of 9943109959 is about 99715.1440805257. The cubic root of 9943109959 is about 2150.3413886596.

The spelling of 9943109959 in words is "nine billion, nine hundred forty-three million, one hundred nine thousand, nine hundred fifty-nine".