9198861 has 32 divisors (see below), whose sum is σ = 14665728. Its totient is φ = 5019840.

The previous prime is 9198859. The next prime is 9198863. The reversal of 9198861 is 1688919.

9198861 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9198859) and next prime (9198863).

It is not a de Polignac number, because 9198861 - 2¹ = 9198859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9198863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55000 + ... + 55166.

It is an arithmetic number, because the mean of its divisors is an integer number (458304).

Almost surely, 2^9198861 is an apocalyptic number.

It is an amenable number.

9198861 is a deficient number, since it is larger than the sum of its proper divisors (5466867).

9198861 is a wasteful number, since it uses less digits than its factorization.

9198861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281.

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

The square root of 9198861 is about 3032.9624132191. The cubic root of 9198861 is about 209.5292630427.

The spelling of 9198861 in words is "nine million, one hundred ninety-eight thousand, eight hundred sixty-one".