9998143700 has 144 divisors (see below), whose sum is σ = 24622424064.
Its totient is φ = 3502540800.
The previous prime is 9998143697. The next prime is 9998143709. The reversal of 9998143700 is 73418999.
It is a Harshad number since it is a multiple of its sum of digits (50).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (9998143709) by changing a digit.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1443245 + ... + 1450155.
It is an arithmetic number, because the mean of its divisors is an integer number (170989056).
Almost surely, 29998143700 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 9998143700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12311212032).
9998143700 is an abundant number, since it is smaller than the sum of its proper divisors (14624280364).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
9998143700 is a wasteful number, since it uses less digits than its factorization.
With its successor (9998143701) it forms an eRAP, since the sums of their prime factors are consecutive (7002 and 7003).
9998143700 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 7002 (or 6995 counting only the distinct ones).
The product of its (nonzero) digits is 489888, while the sum is 50.
The square root of 9998143700 is about 99990.7180692288.
The cubic root of 9998143700 is about 2154.3013725451.
The spelling of 9998143700 in words is "nine billion, nine hundred ninety-eight million, one hundred forty-three thousand, seven hundred".