393913343 has 2 divisors, whose sum is σ = 393913344. Its totient is φ = 393913342.

The previous prime is 393913321. The next prime is 393913357. The reversal of 393913343 is 343319393.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 393913343 - 2⁶ = 393913279 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 393913297 and 393913306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (393913043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196956671 + 196956672.

It is an arithmetic number, because the mean of its divisors is an integer number (196956672).

Almost surely, 2^393913343 is an apocalyptic number.

393913343 is a deficient number, since it is larger than the sum of its proper divisors (1).

393913343 is an equidigital number, since it uses as much as digits as its factorization.

393913343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78732, while the sum is 38.

The square root of 393913343 is about 19847.2502629457. The cubic root of 393913343 is about 733.0499424053.

The spelling of 393913343 in words is "three hundred ninety-three million, nine hundred thirteen thousand, three hundred forty-three".