It is a sphenic number, since it is the product of 3 distinct primes.
49998678 is an admirable number.
It is a Curzon number.
It is a congruent number.
It is an unprimeable number.
Almost surely, 249998678 is an apocalyptic number.
49998678 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.
49998678 is a wasteful number, since it uses less digits than its factorization.
49998678 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 8333118.
The square root of 49998678 is about 7070.9743317311. The cubic root of 49998678 is about 368.3999029757.
The spelling of 49998678 in words is "forty-nine million, nine hundred ninety-eight thousand, six hundred seventy-eight".