It is a happy number.
49999860 is a `hidden beast` number, since 499 + 9 + 98 + 60 = 666.
It is a congruent number.
It is an unprimeable number.
Almost surely, 249999860 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 49999860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76227060).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
49999860 is a wasteful number, since it uses less digits than its factorization.
49999860 is an odious number, because the sum of its binary digits is odd.
The square root of 49999860 is about 7071.0579123636. The cubic root of 49999860 is about 368.4028060208.
The spelling of 49999860 in words is "forty-nine million, nine hundred ninety-nine thousand, eight hundred sixty".