9965843 has 2 divisors, whose sum is σ = 9965844. Its totient is φ = 9965842.

The previous prime is 9965819. The next prime is 9965863. The reversal of 9965843 is 3485699.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9965843 - 2⁶ = 9965779 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9965794 and 9965803.

It is not a weakly prime, because it can be changed into another prime (9965803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4982921 + 4982922.

It is an arithmetic number, because the mean of its divisors is an integer number (4982922).

Almost surely, 2^9965843 is an apocalyptic number.

9965843 is a deficient number, since it is larger than the sum of its proper divisors (1).

9965843 is an equidigital number, since it uses as much as digits as its factorization.

9965843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 44.

The square root of 9965843 is about 3156.8723445841. The cubic root of 9965843 is about 215.1978924329.

The spelling of 9965843 in words is "nine million, nine hundred sixty-five thousand, eight hundred forty-three".