393941694693 has 16 divisors (see below), whose sum is σ = 542333683712. Its totient is φ = 254092950000.

The previous prime is 393941694649. The next prime is 393941694721. The reversal of 393941694693 is 396496149393.

393941694693 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 393941694693 - 2⁸ = 393941694437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393941694613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146083 + ... + 899568.

It is an arithmetic number, because the mean of its divisors is an integer number (33895855232).

Almost surely, 2^393941694693 is an apocalyptic number.

It is an amenable number.

393941694693 is a deficient number, since it is larger than the sum of its proper divisors (148391989019).

393941694693 is a wasteful number, since it uses less digits than its factorization.

393941694693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049736.

The product of its digits is 102036672, while the sum is 66.

The spelling of 393941694693 in words is "three hundred ninety-three billion, nine hundred forty-one million, six hundred ninety-four thousand, six hundred ninety-three".