9008021 has 8 divisors (see below), whose sum is σ = 9915264. Its totient is φ = 8115520.

The previous prime is 9007993. The next prime is 9008023. The reversal of 9008021 is 1208009.

9008021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 9008021 - 2¹⁴ = 8991637 is a prime.

It is a super-2 number, since 2×9008021² = 162288884672882, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 9007984 and 9008002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9008023) 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, 2381 + ... + 4866.

It is an arithmetic number, because the mean of its divisors is an integer number (1239408).

Almost surely, 2^9008021 is an apocalyptic number.

It is an amenable number.

9008021 is a deficient number, since it is larger than the sum of its proper divisors (907243).

9008021 is a wasteful number, since it uses less digits than its factorization.

9008021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7371.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 9008021 is about 3001.3365356121. The cubic root of 9008021 is about 208.0701578545.

The spelling of 9008021 in words is "nine million, eight thousand, twenty-one".