1109198 has 8 divisors (see below), whose sum is σ = 1736208. Its totient is φ = 530464.

The previous prime is 1109197. The next prime is 1109219. The reversal of 1109198 is 8919011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1109198.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1109197) 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 3 ways as a sum of consecutive naturals, for example, 12011 + ... + 12102.

It is an arithmetic number, because the mean of its divisors is an integer number (217026).

2^1109198 is an apocalyptic number.

1109198 is a deficient number, since it is larger than the sum of its proper divisors (627010).

1109198 is a wasteful number, since it uses less digits than its factorization.

1109198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24138.

The product of its (nonzero) digits is 648, while the sum is 29.

The square root of 1109198 is about 1053.1846941539. The cubic root of 1109198 is about 103.5149379048.

The spelling of 1109198 in words is "one million, one hundred nine thousand, one hundred ninety-eight".