9918384 has 60 divisors (see below), whose sum is σ = 29812824. Its totient is φ = 2833152.

The previous prime is 9918383. The next prime is 9918407. The reversal of 9918384 is 4838199.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (9918383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 244 + ... + 4460.

Almost surely, 2^9918384 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 9918384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14906412).

9918384 is an abundant number, since it is smaller than the sum of its proper divisors (19894440).

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

9918384 is a wasteful number, since it uses less digits than its factorization.

9918384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4242 (or 4229 counting only the distinct ones).

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

The square root of 9918384 is about 3149.3465988995. The cubic root of 9918384 is about 214.8557460325.

The spelling of 9918384 in words is "nine million, nine hundred eighteen thousand, three hundred eighty-four".