9985887 has 24 divisors (see below), whose sum is σ = 15849600. Its totient is φ = 6030288.

The previous prime is 9985879. The next prime is 9985891. The reversal of 9985887 is 7885899.

It is not a de Polignac number, because 9985887 - 2³ = 9985879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9985867) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2664 + ... + 5202.

It is an arithmetic number, because the mean of its divisors is an integer number (660400).

Almost surely, 2^9985887 is an apocalyptic number.

9985887 is a deficient number, since it is larger than the sum of its proper divisors (5863713).

9985887 is a wasteful number, since it uses less digits than its factorization.

9985887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2587 (or 2584 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 54.

The square root of 9985887 is about 3160.0454110661. The cubic root of 9985887 is about 215.3420694972.

The spelling of 9985887 in words is "nine million, nine hundred eighty-five thousand, eight hundred eighty-seven".