4228309 has 2 divisors, whose sum is σ = 4228310. Its totient is φ = 4228308.

The previous prime is 4228271. The next prime is 4228313. The reversal of 4228309 is 9038224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2480625 + 1747684 = 1575^2 + 1322^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4228309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4228349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2114154 + 2114155.

It is an arithmetic number, because the mean of its divisors is an integer number (2114155).

Almost surely, 2^4228309 is an apocalyptic number.

It is an amenable number.

4228309 is a deficient number, since it is larger than the sum of its proper divisors (1).

4228309 is an equidigital number, since it uses as much as digits as its factorization.

4228309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 4228309 is about 2056.2852428591. The cubic root of 4228309 is about 161.7045496419.

The spelling of 4228309 in words is "four million, two hundred twenty-eight thousand, three hundred nine".