6395994072 is a `hidden beast` number, since 6 + 3 + 9 + 599 + 40 + 7 + 2 = 666.
It is a congruent number.
Almost surely, 26395994072 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 6395994072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9381645000).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
6395994072 is a wasteful number, since it uses less digits than its factorization.
6395994072 is an odious number, because the sum of its binary digits is odd.
The square root of 6395994072 is about 79974.9590309367. The cubic root of 6395994072 is about 1856.2480802891.
The spelling of 6395994072 in words is "six billion, three hundred ninety-five million, nine hundred ninety-four thousand, seventy-two".