509340679 has 2 divisors, whose sum is σ = 509340680. Its totient is φ = 509340678.

The previous prime is 509340649. The next prime is 509340683. The reversal of 509340679 is 976043905.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 509340679 - 2⁵ = 509340647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (509340649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254670339 + 254670340.

It is an arithmetic number, because the mean of its divisors is an integer number (254670340).

Almost surely, 2^509340679 is an apocalyptic number.

509340679 is a deficient number, since it is larger than the sum of its proper divisors (1).

509340679 is an equidigital number, since it uses as much as digits as its factorization.

509340679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 204120, while the sum is 43.

The square root of 509340679 is about 22568.5772480234. The cubic root of 509340679 is about 798.6125320361.

The spelling of 509340679 in words is "five hundred nine million, three hundred forty thousand, six hundred seventy-nine".