393071339 has 2 divisors, whose sum is σ = 393071340. Its totient is φ = 393071338.

The previous prime is 393071321. The next prime is 393071353. The reversal of 393071339 is 933170393.

It is a strong prime.

It is an emirp because it is prime and its reverse (933170393) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-393071339 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (393071309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196535669 + 196535670.

It is an arithmetic number, because the mean of its divisors is an integer number (196535670).

Almost surely, 2^393071339 is an apocalyptic number.

393071339 is a deficient number, since it is larger than the sum of its proper divisors (1).

393071339 is an equidigital number, since it uses as much as digits as its factorization.

393071339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45927, while the sum is 38.

The square root of 393071339 is about 19826.0268082135. The cubic root of 393071339 is about 732.5272629022.

The spelling of 393071339 in words is "three hundred ninety-three million, seventy-one thousand, three hundred thirty-nine".