4238309 has 2 divisors, whose sum is σ = 4238310. Its totient is φ = 4238308.

The previous prime is 4238303. The next prime is 4238393. The reversal of 4238309 is 9038324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4060225 + 178084 = 2015^2 + 422^2 .

It is a cyclic number.

It is not a de Polignac number, because 4238309 - 2⁸ = 4238053 is a prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4238303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2119154 + 2119155.

It is an arithmetic number, because the mean of its divisors is an integer number (2119155).

Almost surely, 2^4238309 is an apocalyptic number.

It is an amenable number.

4238309 is a deficient number, since it is larger than the sum of its proper divisors (1).

4238309 is an equidigital number, since it uses as much as digits as its factorization.

4238309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 4238309 is about 2058.7153761509. The cubic root of 4238309 is about 161.8319269923.

The spelling of 4238309 in words is "four million, two hundred thirty-eight thousand, three hundred nine".