930509 has 2 divisors, whose sum is σ = 930510. Its totient is φ = 930508.

The previous prime is 930499. The next prime is 930547. The reversal of 930509 is 905039.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 504100 + 426409 = 710^2 + 653^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-930509 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (930569) 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, 465254 + 465255.

It is an arithmetic number, because the mean of its divisors is an integer number (465255).

2⁹³⁰⁵⁰⁹ is an apocalyptic number.

It is an amenable number.

930509 is a deficient number, since it is larger than the sum of its proper divisors (1).

930509 is an equidigital number, since it uses as much as digits as its factorization.

930509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1215, while the sum is 26.

The square root of 930509 is about 964.6289442060. The cubic root of 930509 is about 97.6278052217.

The spelling of 930509 in words is "nine hundred thirty thousand, five hundred nine".