9381904 has 40 divisors (see below), whose sum is σ = 20925248. Its totient is φ = 3991680.

The previous prime is 9381899. The next prime is 9381917. The reversal of 9381904 is 4091839.

It is a self number, because there is not a number n which added to its sum of digits gives 9381904.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23434 + ... + 23830.

Almost surely, 2^9381904 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 9381904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10462624).

9381904 is an abundant number, since it is smaller than the sum of its proper divisors (11543344).

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

9381904 is a wasteful number, since it uses less digits than its factorization.

9381904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623 (or 617 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 9381904 is about 3062.9893894691. The cubic root of 9381904 is about 210.9099141502.

The spelling of 9381904 in words is "nine million, three hundred eighty-one thousand, nine hundred four".