9883987 has 4 divisors (see below), whose sum is σ = 10465416. Its totient is φ = 9302560.

The previous prime is 9883967. The next prime is 9884003. The reversal of 9883987 is 7893889.

9883987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7893889 = 109 ⋅72421.

It is a cyclic number.

It is not a de Polignac number, because 9883987 - 2²³ = 1495379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9883967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 290689 + ... + 290722.

It is an arithmetic number, because the mean of its divisors is an integer number (2616354).

Almost surely, 2^9883987 is an apocalyptic number.

9883987 is a deficient number, since it is larger than the sum of its proper divisors (581429).

9883987 is a wasteful number, since it uses less digits than its factorization.

9883987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581428.

The product of its digits is 870912, while the sum is 52.

The square root of 9883987 is about 3143.8808819674. The cubic root of 9883987 is about 214.6070847957.

The spelling of 9883987 in words is "nine million, eight hundred eighty-three thousand, nine hundred eighty-seven".