9899198 has 4 divisors (see below), whose sum is σ = 14848800. Its totient is φ = 4949598.

The previous prime is 9899173. The next prime is 9899221. The reversal of 9899198 is 8919989.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2474798 + ... + 2474801.

It is an arithmetic number, because the mean of its divisors is an integer number (3712200).

Almost surely, 2^9899198 is an apocalyptic number.

9899198 is a deficient number, since it is larger than the sum of its proper divisors (4949602).

9899198 is a wasteful number, since it uses less digits than its factorization.

9899198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4949601.

The product of its digits is 419904, while the sum is 53.

The square root of 9899198 is about 3146.2990957631. The cubic root of 9899198 is about 214.7171185036.

The spelling of 9899198 in words is "nine million, eight hundred ninety-nine thousand, one hundred ninety-eight".