It is a congruent number.
It is an unprimeable number.
Almost surely, 2999870004 is an apocalyptic number.
999870004 is the 19999-th heptagonal number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 999870004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1037111040).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
999870004 is a wasteful number, since it uses less digits than its factorization.
999870004 is an evil number, because the sum of its binary digits is even.
The square root of 999870004 is about 31620.7211176469. The cubic root of 999870004 is about 999.9566661222.
The spelling of 999870004 in words is "nine hundred ninety-nine million, eight hundred seventy thousand, four".