9986993 has 2 divisors, whose sum is σ = 9986994. Its totient is φ = 9986992.

The previous prime is 9986987. The next prime is 9987001. The reversal of 9986993 is 3996899.

9986993 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5094049 + 4892944 = 2257^2 + 2212^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9986993 is a prime.

It is a super-4 number, since 4×9986993⁴ (a number of 29 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (9986593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4993496 + 4993497.

It is an arithmetic number, because the mean of its divisors is an integer number (4993497).

Almost surely, 2^9986993 is an apocalyptic number.

It is an amenable number.

9986993 is a deficient number, since it is larger than the sum of its proper divisors (1).

9986993 is an equidigital number, since it uses as much as digits as its factorization.

9986993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 944784, while the sum is 53.

The square root of 9986993 is about 3160.2204037060. The cubic root of 9986993 is about 215.3500193681.

The spelling of 9986993 in words is "nine million, nine hundred eighty-six thousand, nine hundred ninety-three".