393748847393 has 16 divisors (see below), whose sum is σ = 452343056640. Its totient is φ = 338970387600.

The previous prime is 393748847389. The next prime is 393748847407.

393748847393 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 393748847393 - 2² = 393748847389 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (393748847333) 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 in 15 ways as a sum of consecutive naturals, for example, 98246 + ... + 892832.

It is an arithmetic number, because the mean of its divisors is an integer number (28271441040).

Almost surely, 2^393748847393 is an apocalyptic number.

It is an amenable number.

393748847393 is a deficient number, since it is larger than the sum of its proper divisors (58594209247).

393748847393 is a wasteful number, since it uses less digits than its factorization.

393748847393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796988.

The product of its digits is 329204736, while the sum is 68.

The spelling of 393748847393 in words is "three hundred ninety-three billion, seven hundred forty-eight million, eight hundred forty-seven thousand, three hundred ninety-three".