It is a tau number, because it is divible by the number of its divisors (40).
It is a self number, because there is not a number n which added to its sum of digits gives 393047920.
It is a congruent number.
Almost surely, 2393047920 is an apocalyptic number.
It is an amenable number.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
393047920 is a wasteful number, since it uses less digits than its factorization.
393047920 is an evil number, because the sum of its binary digits is even.
The square root of 393047920 is about 19825.4361868787. The cubic root of 393047920 is about 732.5127147401.
The spelling of 393047920 in words is "three hundred ninety-three million, forty-seven thousand, nine hundred twenty".