9861198 has 16 divisors (see below), whose sum is σ = 19811280. Its totient is φ = 3272256.

The previous prime is 9861191. The next prime is 9861217. The reversal of 9861198 is 8911689.

9861198 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9861191) 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, 2215 + ... + 4962.

It is an arithmetic number, because the mean of its divisors is an integer number (1238205).

Almost surely, 2^9861198 is an apocalyptic number.

9861198 is an abundant number, since it is smaller than the sum of its proper divisors (9950082).

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

9861198 is a wasteful number, since it uses less digits than its factorization.

9861198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7411.

The product of its digits is 31104, while the sum is 42.

The square root of 9861198 is about 3140.2544482892. The cubic root of 9861198 is about 214.4420217023.

The spelling of 9861198 in words is "nine million, eight hundred sixty-one thousand, one hundred ninety-eight".