935809309 has 2 divisors, whose sum is σ = 935809310. Its totient is φ = 935809308.

The previous prime is 935809253. The next prime is 935809327. The reversal of 935809309 is 903908539.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 492706809 + 443102500 = 22197^2 + 21050^2 .

It is an emirp because it is prime and its reverse (903908539) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 935809309 - 2²⁵ = 902254877 is a prime.

It is a super-2 number, since 2×935809309² = 1751478125622114962, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (935809709) 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, 467904654 + 467904655.

It is an arithmetic number, because the mean of its divisors is an integer number (467904655).

Almost surely, 2^935809309 is an apocalyptic number.

It is an amenable number.

935809309 is a deficient number, since it is larger than the sum of its proper divisors (1).

935809309 is an equidigital number, since it uses as much as digits as its factorization.

935809309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 262440, while the sum is 46.

The square root of 935809309 is about 30591.0004576509. Note that the first 3 decimals coincide. The cubic root of 935809309 is about 978.1282156890.

The spelling of 935809309 in words is "nine hundred thirty-five million, eight hundred nine thousand, three hundred nine".