9821198 has 12 divisors (see below), whose sum is σ = 15259920. Its totient is φ = 4740456.

The previous prime is 9821173. The next prime is 9821213. The reversal of 9821198 is 8911289.

9821198 is nontrivially palindromic in base 3.

9821198 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1238 + ... + 4601.

It is an arithmetic number, because the mean of its divisors is an integer number (1271660).

Almost surely, 2^9821198 is an apocalyptic number.

9821198 is a deficient number, since it is larger than the sum of its proper divisors (5438722).

9821198 is a wasteful number, since it uses less digits than its factorization.

9821198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5899 (or 5870 counting only the distinct ones).

The product of its digits is 10368, while the sum is 38.

The square root of 9821198 is about 3133.8790659501. The cubic root of 9821198 is about 214.1516815575.

Subtracting from 9821198 its reverse (8911289), we obtain a palindrome (909909).

The spelling of 9821198 in words is "nine million, eight hundred twenty-one thousand, one hundred ninety-eight".