9998243 has 8 divisors (see below), whose sum is σ = 10441200.
Its totient is φ = 9561888.
The previous prime is 9998239. The next prime is 9998249. The reversal of 9998243 is 3428999.
9998243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a Cunningham number, because it is equal to 31622-1.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 9998243 - 22 = 9998239 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 9998194 and 9998203.
It is not an unprimeable number, because it can be changed into a prime (9998249) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1580 + ... + 4742.
It is an arithmetic number, because the mean of its divisors is an integer number (1305150).
Almost surely, 29998243 is an apocalyptic number.
9998243 is a deficient number, since it is larger than the sum of its proper divisors (442957).
9998243 is a wasteful number, since it uses less digits than its factorization.
9998243 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3301.
The product of its digits is 139968, while the sum is 44.
The square root of 9998243 is about 3161.9998418722.
Note that the first 3 decimals coincide.
The cubic root of 9998243 is about 215.4308504583.
The spelling of 9998243 in words is "nine million, nine hundred ninety-eight thousand, two hundred forty-three".