393393079 has 2 divisors, whose sum is σ = 393393080. Its totient is φ = 393393078.

The previous prime is 393393071. The next prime is 393393089. The reversal of 393393079 is 970393393.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 393393079 - 2³ = 393393071 is a prime.

It is a super-2 number, since 2×393393079² = 309516229210200482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (393393071) 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, 196696539 + 196696540.

It is an arithmetic number, because the mean of its divisors is an integer number (196696540).

Almost surely, 2^393393079 is an apocalyptic number.

393393079 is a deficient number, since it is larger than the sum of its proper divisors (1).

393393079 is an equidigital number, since it uses as much as digits as its factorization.

393393079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 413343, while the sum is 46.

The square root of 393393079 is about 19834.1392301254. The cubic root of 393393079 is about 732.7270731511.

The spelling of 393393079 in words is "three hundred ninety-three million, three hundred ninety-three thousand, seventy-nine".