39887 has 2 divisors, whose sum is σ = 39888. Its totient is φ = 39886.

The previous prime is 39883. The next prime is 39901. The reversal of 39887 is 78893.

It is a weak prime.

It is an emirp because it is prime and its reverse (78893) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39887 - 2² = 39883 is a prime.

It is a Chen prime.

It is a plaindrome in base 16.

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 39887.

It is not a weakly prime, because it can be changed into another prime (39883) 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, 19943 + 19944.

It is an arithmetic number, because the mean of its divisors is an integer number (19944).

2³⁹⁸⁸⁷ is an apocalyptic number.

39887 is a deficient number, since it is larger than the sum of its proper divisors (1).

39887 is an equidigital number, since it uses as much as digits as its factorization.

39887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 35.

The square root of 39887 is about 199.7173002021. The cubic root of 39887 is about 34.1672840129.

The spelling of 39887 in words is "thirty-nine thousand, eight hundred eighty-seven".