9986287 has 2 divisors, whose sum is σ = 9986288. Its totient is φ = 9986286.

The previous prime is 9986257. The next prime is 9986323. The reversal of 9986287 is 7826899.

It is a happy number.

9986287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (7826899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9986287 - 2²³ = 1597679 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9986287.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9986227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4993143 + 4993144.

It is an arithmetic number, because the mean of its divisors is an integer number (4993144).

Almost surely, 2^9986287 is an apocalyptic number.

9986287 is a deficient number, since it is larger than the sum of its proper divisors (1).

9986287 is an equidigital number, since it uses as much as digits as its factorization.

9986287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 49.

The square root of 9986287 is about 3160.1087006621. The cubic root of 9986287 is about 215.3449447443.

The spelling of 9986287 in words is "nine million, nine hundred eighty-six thousand, two hundred eighty-seven".