9001229 has 2 divisors, whose sum is σ = 9001230. Its totient is φ = 9001228.

The previous prime is 9001219. The next prime is 9001243. The reversal of 9001229 is 9221009.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8988004 + 13225 = 2998^2 + 115^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9001229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9001219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4500614 + 4500615.

It is an arithmetic number, because the mean of its divisors is an integer number (4500615).

Almost surely, 2^9001229 is an apocalyptic number.

It is an amenable number.

9001229 is a deficient number, since it is larger than the sum of its proper divisors (1).

9001229 is an equidigital number, since it uses as much as digits as its factorization.

9001229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 9001229 is about 3000.2048263410. The cubic root of 9001229 is about 208.0178501076.

The spelling of 9001229 in words is "nine million, one thousand, two hundred twenty-nine".