9039221 has 2 divisors, whose sum is σ = 9039222. Its totient is φ = 9039220.

The previous prime is 9039179. The next prime is 9039227. The reversal of 9039221 is 1229309.

9039221 is nontrivially palindromic in base 6.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7623121 + 1416100 = 2761^2 + 1190^2 .

It is an emirp because it is prime and its reverse (1229309) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9039221 - 2⁶ = 9039157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9039227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4519610 + 4519611.

It is an arithmetic number, because the mean of its divisors is an integer number (4519611).

Almost surely, 2^9039221 is an apocalyptic number.

It is an amenable number.

9039221 is a deficient number, since it is larger than the sum of its proper divisors (1).

9039221 is an equidigital number, since it uses as much as digits as its factorization.

9039221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 9039221 is about 3006.5297271106. The cubic root of 9039221 is about 208.3101035788.

The spelling of 9039221 in words is "nine million, thirty-nine thousand, two hundred twenty-one".