2309239 has 2 divisors, whose sum is σ = 2309240. Its totient is φ = 2309238.

The previous prime is 2309233. The next prime is 2309257. The reversal of 2309239 is 9329032.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2309239 - 2³ = 2309231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2309231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1154619 + 1154620.

It is an arithmetic number, because the mean of its divisors is an integer number (1154620).

2^2309239 is an apocalyptic number.

2309239 is a deficient number, since it is larger than the sum of its proper divisors (1).

2309239 is an equidigital number, since it uses as much as digits as its factorization.

2309239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 2309239 is about 1519.6180441150. The cubic root of 2309239 is about 132.1771229514.

The spelling of 2309239 in words is "two million, three hundred nine thousand, two hundred thirty-nine".