305340439 has 2 divisors, whose sum is σ = 305340440. Its totient is φ = 305340438.

The previous prime is 305340403. The next prime is 305340457. The reversal of 305340439 is 934043503.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 305340439 - 2⁷ = 305340311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 305340439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (305340839) 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, 152670219 + 152670220.

It is an arithmetic number, because the mean of its divisors is an integer number (152670220).

Almost surely, 2^305340439 is an apocalyptic number.

305340439 is a deficient number, since it is larger than the sum of its proper divisors (1).

305340439 is an equidigital number, since it uses as much as digits as its factorization.

305340439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 31.

The square root of 305340439 is about 17473.9932184947. The cubic root of 305340439 is about 673.3819049419.

The spelling of 305340439 in words is "three hundred five million, three hundred forty thousand, four hundred thirty-nine".