930388309 has 2 divisors, whose sum is σ = 930388310. Its totient is φ = 930388308.

The previous prime is 930388297. The next prime is 930388351. The reversal of 930388309 is 903883039.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 883397284 + 46991025 = 29722^2 + 6855^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-930388309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (930388369) 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, 465194154 + 465194155.

It is an arithmetic number, because the mean of its divisors is an integer number (465194155).

Almost surely, 2^930388309 is an apocalyptic number.

It is an amenable number.

930388309 is a deficient number, since it is larger than the sum of its proper divisors (1).

930388309 is an equidigital number, since it uses as much as digits as its factorization.

930388309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 930388309 is about 30502.2672763846. The cubic root of 930388309 is about 976.2358412446.

The spelling of 930388309 in words is "nine hundred thirty million, three hundred eighty-eight thousand, three hundred nine".