9804021 has 8 divisors (see below), whose sum is σ = 13102464. Its totient is φ = 6520800.

The previous prime is 9804017. The next prime is 9804031. The reversal of 9804021 is 1204089.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9804021 - 2² = 9804017 is a prime.

It is a super-2 number, since 2×9804021² = 192237655536882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9803982 and 9804000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9804031) 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 7 ways as a sum of consecutive naturals, for example, 2205 + ... + 4946.

It is an arithmetic number, because the mean of its divisors is an integer number (1637808).

Almost surely, 2^9804021 is an apocalyptic number.

It is an amenable number.

9804021 is a deficient number, since it is larger than the sum of its proper divisors (3298443).

9804021 is a wasteful number, since it uses less digits than its factorization.

9804021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7611.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 9804021 is about 3131.1373333024. The cubic root of 9804021 is about 214.0267602719.

The spelling of 9804021 in words is "nine million, eight hundred four thousand, twenty-one".