394673933384 has 8 divisors (see below), whose sum is σ = 740013625110. Its totient is φ = 197336966688.

The previous prime is 394673933323. The next prime is 394673933387. The reversal of 394673933384 is 483339376493.

It can be written as a sum of positive squares in only one way, i.e., 388101588484 + 6572344900 = 622978^2 + 81070^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×394673933384³ (a number of 36 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (394673933387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24667120829 + ... + 24667120844.

Almost surely, 2^394673933384 is an apocalyptic number.

It is an amenable number.

394673933384 is a deficient number, since it is larger than the sum of its proper divisors (345339691726).

394673933384 is a wasteful number, since it uses less digits than its factorization.

394673933384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49334241679 (or 49334241675 counting only the distinct ones).

The product of its digits is 105815808, while the sum is 62.

The spelling of 394673933384 in words is "three hundred ninety-four billion, six hundred seventy-three million, nine hundred thirty-three thousand, three hundred eighty-four".