It is a happy number.
8139856 is an admirable number.
It is a congruent number.
It is an unprimeable number.
Almost surely, 28139856 is an apocalyptic number.
8139856 is the 2330-th centered triangular number.
It is an amenable number.
8139856 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
8139856 is a wasteful number, since it uses less digits than its factorization.
8139856 is an evil number, because the sum of its binary digits is even.
The square root of 8139856 is about 2853.0432874389. The cubic root of 8139856 is about 201.1587403060.
The spelling of 8139856 in words is "eight million, one hundred thirty-nine thousand, eight hundred fifty-six".