339394309 has 2 divisors, whose sum is σ = 339394310. Its totient is φ = 339394308.

The previous prime is 339394277. The next prime is 339394327. The reversal of 339394309 is 903493933.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205922500 + 133471809 = 14350^2 + 11553^2 .

It is an emirp because it is prime and its reverse (903493933) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 339394309 - 2⁵ = 339394277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (339394339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169697154 + 169697155.

It is an arithmetic number, because the mean of its divisors is an integer number (169697155).

Almost surely, 2^339394309 is an apocalyptic number.

It is an amenable number.

339394309 is a deficient number, since it is larger than the sum of its proper divisors (1).

339394309 is an equidigital number, since it uses as much as digits as its factorization.

339394309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 236196, while the sum is 43.

The square root of 339394309 is about 18422.6574901668. The cubic root of 339394309 is about 697.5385034607.

The spelling of 339394309 in words is "three hundred thirty-nine million, three hundred ninety-four thousand, three hundred nine".