9986904 has 48 divisors (see below), whose sum is σ = 27986400. Its totient is φ = 3213504.

The previous prime is 9986897. The next prime is 9986917. The reversal of 9986904 is 4096899.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 9986904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 304 + ... + 4479.

It is an arithmetic number, because the mean of its divisors is an integer number (583050).

Almost surely, 2^9986904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9986904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13993200).

9986904 is an abundant number, since it is smaller than the sum of its proper divisors (17999496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9986904 is a wasteful number, since it uses less digits than its factorization.

9986904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4824 (or 4817 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 9986904 is about 3160.2063223783. The cubic root of 9986904 is about 215.3493796624.

The spelling of 9986904 in words is "nine million, nine hundred eighty-six thousand, nine hundred four".