9228749 has 2 divisors, whose sum is σ = 9228750. Its totient is φ = 9228748.

The previous prime is 9228743. The next prime is 9228763. The reversal of 9228749 is 9478229.

9228749 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., 8514724 + 714025 = 2918^2 + 845^2 .

It is a cyclic number.

It is not a de Polignac number, because 9228749 - 2¹² = 9224653 is a prime.

It is a Sophie Germain 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 (9228743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4614374 + 4614375.

It is an arithmetic number, because the mean of its divisors is an integer number (4614375).

Almost surely, 2^9228749 is an apocalyptic number.

It is an amenable number.

9228749 is a deficient number, since it is larger than the sum of its proper divisors (1).

9228749 is an equidigital number, since it uses as much as digits as its factorization.

9228749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 41.

The square root of 9228749 is about 3037.8856133831. The cubic root of 9228749 is about 209.7559447458.

The spelling of 9228749 in words is "nine million, two hundred twenty-eight thousand, seven hundred forty-nine".