9887 has 2 divisors, whose sum is σ = 9888. Its totient is φ = 9886.
The previous prime is 9883. The next prime is 9901. The reversal of 9887 is 7889.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 9887 - 22 = 9883 is a prime.
It is a plaindrome in base 13 and base 16.
It is a nialpdrome in base 10.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 9887.
It is not a weakly prime, because it can be changed into another prime (9883) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4943 + 4944.
It is an arithmetic number, because the mean of its divisors is an integer number (4944).
29887 is an apocalyptic number.
9887 is a deficient number, since it is larger than the sum of its proper divisors (1).
9887 is an equidigital number, since it uses as much as digits as its factorization.
9887 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 4032, while the sum is 32.
The square root of 9887 is about 99.4333947927. The cubic root of 9887 is about 21.4628889271.
The spelling of 9887 in words is "nine thousand, eight hundred eighty-seven".
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