9998238 has 32 divisors (see below), whose sum is σ = 21275136. Its totient is φ = 3125408.

The previous prime is 9998207. The next prime is 9998239. The reversal of 9998238 is 8328999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9998239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6631 + ... + 7997.

It is an arithmetic number, because the mean of its divisors is an integer number (664848).

Almost surely, 2^9998238 is an apocalyptic number.

9998238 is an abundant number, since it is smaller than the sum of its proper divisors (11276898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9998238 is a wasteful number, since it uses less digits than its factorization.

9998238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1448.

The product of its digits is 279936, while the sum is 48.

The square root of 9998238 is about 3161.9990512333. Note that the first 3 decimals coincide. The cubic root of 9998238 is about 215.4308145468.

The spelling of 9998238 in words is "nine million, nine hundred ninety-eight thousand, two hundred thirty-eight".