9984138 has 16 divisors (see below), whose sum is σ = 20004960. Its totient is φ = 3321936.

The previous prime is 9984133. The next prime is 9984167. The reversal of 9984138 is 8314899.

It is a self number, because there is not a number n which added to its sum of digits gives 9984138.

It is not an unprimeable number, because it can be changed into a prime (9984131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3081 + ... + 5427.

It is an arithmetic number, because the mean of its divisors is an integer number (1250310).

Almost surely, 2^9984138 is an apocalyptic number.

9984138 is an abundant number, since it is smaller than the sum of its proper divisors (10020822).

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

9984138 is a wasteful number, since it uses less digits than its factorization.

9984138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3061.

The product of its digits is 62208, while the sum is 42.

The square root of 9984138 is about 3159.7686624182. The cubic root of 9984138 is about 215.3294965774.

The spelling of 9984138 in words is "nine million, nine hundred eighty-four thousand, one hundred thirty-eight".