9956993 has 2 divisors, whose sum is σ = 9956994. Its totient is φ = 9956992.

The previous prime is 9956977. The next prime is 9957001. The reversal of 9956993 is 3996599.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9909904 + 47089 = 3148^2 + 217^2 .

It is a cyclic number.

It is not a de Polignac number, because 9956993 - 2⁴ = 9956977 is a prime.

It is not a weakly prime, because it can be changed into another prime (9956963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4978496 + 4978497.

It is an arithmetic number, because the mean of its divisors is an integer number (4978497).

Almost surely, 2^9956993 is an apocalyptic number.

It is an amenable number.

9956993 is a deficient number, since it is larger than the sum of its proper divisors (1).

9956993 is an equidigital number, since it uses as much as digits as its factorization.

9956993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 590490, while the sum is 50.

The square root of 9956993 is about 3155.4703294438. The cubic root of 9956993 is about 215.1341726058.

The spelling of 9956993 in words is "nine million, nine hundred fifty-six thousand, nine hundred ninety-three".