9072229 has 2 divisors, whose sum is σ = 9072230. Its totient is φ = 9072228.

The previous prime is 9072227. The next prime is 9072247. The reversal of 9072229 is 9222709.

9072229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7851204 + 1221025 = 2802^2 + 1105^2 .

It is an emirp because it is prime and its reverse (9222709) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9072229 - 2¹ = 9072227 is a prime.

Together with 9072227, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 9072229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9072227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4536114 + 4536115.

It is an arithmetic number, because the mean of its divisors is an integer number (4536115).

Almost surely, 2^9072229 is an apocalyptic number.

It is an amenable number.

9072229 is a deficient number, since it is larger than the sum of its proper divisors (1).

9072229 is an equidigital number, since it uses as much as digits as its factorization.

9072229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 9072229 is about 3012.0141101927. The cubic root of 9072229 is about 208.5633535508.

It can be divided in two parts, 907 and 2229, that added together give a square (3136 = 56²).

The spelling of 9072229 in words is "nine million, seventy-two thousand, two hundred twenty-nine".