9038021 has 2 divisors, whose sum is σ = 9038022. Its totient is φ = 9038020.

The previous prime is 9037991. The next prime is 9038023. The reversal of 9038021 is 1208309.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4669921 + 4368100 = 2161^2 + 2090^2 .

It is a cyclic number.

It is not a de Polignac number, because 9038021 - 2¹⁰ = 9036997 is a prime.

It is a Sophie Germain prime.

Together with 9038023, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9038023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4519010 + 4519011.

It is an arithmetic number, because the mean of its divisors is an integer number (4519011).

Almost surely, 2^9038021 is an apocalyptic number.

It is an amenable number.

9038021 is a deficient number, since it is larger than the sum of its proper divisors (1).

9038021 is an equidigital number, since it uses as much as digits as its factorization.

9038021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 9038021 is about 3006.3301548566. The cubic root of 9038021 is about 208.3008851153.

The spelling of 9038021 in words is "nine million, thirty-eight thousand, twenty-one".