It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-87196421 is a prime.
It is a Duffinian number.
It is a congruent number.
Almost surely, 287196421 is an apocalyptic number.
It is an amenable number.
87196421 is a wasteful number, since it uses less digits than its factorization.
87196421 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 142771.
The square root of 87196421 is about 9337.9023875815. The cubic root of 87196421 is about 443.4379792669.
The spelling of 87196421 in words is "eighty-seven million, one hundred ninety-six thousand, four hundred twenty-one".