393539343935393 has 4 divisors (see below), whose sum is σ = 406234161481728. Its totient is φ = 380844526389060.

The previous prime is 393539343935369. The next prime is 393539343935399.

393539343935393 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 393539343935393 - 2²² = 393539339741089 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 393539343935393.

It is not an unprimeable number, because it can be changed into a prime (393539343935399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6347408773121 + ... + 6347408773182.

It is an arithmetic number, because the mean of its divisors is an integer number (101558540370432).

Almost surely, 2^{393539343935393} is an apocalyptic number.

It is an amenable number.

393539343935393 is a deficient number, since it is larger than the sum of its proper divisors (12694817546335).

393539343935393 is a wasteful number, since it uses less digits than its factorization.

393539343935393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12694817546334.

The product of its digits is 4304672100, while the sum is 74.

The spelling of 393539343935393 in words is "three hundred ninety-three trillion, five hundred thirty-nine billion, three hundred forty-three million, nine hundred thirty-five thousand, three hundred ninety-three".