309359 has 2 divisors, whose sum is σ = 309360. Its totient is φ = 309358.

The previous prime is 309317. The next prime is 309367. The reversal of 309359 is 953903.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-309359 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 309359.

It is not a weakly prime, because it can be changed into another prime (309059) 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, 154679 + 154680.

It is an arithmetic number, because the mean of its divisors is an integer number (154680).

2³⁰⁹³⁵⁹ is an apocalyptic number.

309359 is a deficient number, since it is larger than the sum of its proper divisors (1).

309359 is an equidigital number, since it uses as much as digits as its factorization.

309359 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3645, while the sum is 29.

The square root of 309359 is about 556.2005034158. The cubic root of 309359 is about 67.6323147673.

The spelling of 309359 in words is "three hundred nine thousand, three hundred fifty-nine".