9975943 has 2 divisors, whose sum is σ = 9975944. Its totient is φ = 9975942.

The previous prime is 9975899. The next prime is 9975989. The reversal of 9975943 is 3495799.

9975943 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (9975989) can be obtained adding 9975943 to its sum of digits (46).

It is a weak prime.

It is an emirp because it is prime and its reverse (3495799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9975943 - 2⁹ = 9975431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9975893 and 9975902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9975643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4987971 + 4987972.

It is an arithmetic number, because the mean of its divisors is an integer number (4987972).

Almost surely, 2^9975943 is an apocalyptic number.

9975943 is a deficient number, since it is larger than the sum of its proper divisors (1).

9975943 is an equidigital number, since it uses as much as digits as its factorization.

9975943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 306180, while the sum is 46.

The square root of 9975943 is about 3158.4716240612. The cubic root of 9975943 is about 215.2705661604.

The spelling of 9975943 in words is "nine million, nine hundred seventy-five thousand, nine hundred forty-three".