9804381 has 4 divisors (see below), whose sum is σ = 13072512. Its totient is φ = 6536252.

The previous prime is 9804343. The next prime is 9804391. The reversal of 9804381 is 1834089.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9804381 - 2⁶ = 9804317 is a prime.

It is a super-4 number, since 4×9804381⁴ (a number of 29 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9804331) 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 3 ways as a sum of consecutive naturals, for example, 1634061 + ... + 1634066.

It is an arithmetic number, because the mean of its divisors is an integer number (3268128).

Almost surely, 2^9804381 is an apocalyptic number.

It is an amenable number.

9804381 is a deficient number, since it is larger than the sum of its proper divisors (3268131).

9804381 is a wasteful number, since it uses less digits than its factorization.

9804381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3268130.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 9804381 is about 3131.1948198731. The cubic root of 9804381 is about 214.0293799008.

The spelling of 9804381 in words is "nine million, eight hundred four thousand, three hundred eighty-one".