12109194 has 24 divisors (see below), whose sum is σ = 27618240. Its totient is φ = 3823848.

The previous prime is 12109183. The next prime is 12109217. The reversal of 12109194 is 49190121.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 17362 + ... + 18045.

It is an arithmetic number, because the mean of its divisors is an integer number (1150760).

Almost surely, 2^12109194 is an apocalyptic number.

12109194 is an abundant number, since it is smaller than the sum of its proper divisors (15509046).

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

12109194 is a wasteful number, since it uses less digits than its factorization.

12109194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35434 (or 35431 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 12109194 is about 3479.8267198238. The cubic root of 12109194 is about 229.6351746140.

It can be divided in two parts, 1210 and 9194, that added together give a square (10404 = 102²).

The spelling of 12109194 in words is "twelve million, one hundred nine thousand, one hundred ninety-four".