It is a congruent number.
Almost surely, 29998149140 is an apocalyptic number.
9998149140 is a gapful number since it is divisible by the number (90) formed by its first and last digit.
9998149140 is the 63240-th heptagonal number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 9998149140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20022266880).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
9998149140 is a wasteful number, since it uses less digits than its factorization.
9998149140 is an evil number, because the sum of its binary digits is even.
The square root of 9998149140 is about 99990.7452717500. The cubic root of 9998149140 is about 2154.3017632642.
The spelling of 9998149140 in words is "nine billion, nine hundred ninety-eight million, one hundred forty-nine thousand, one hundred forty".