12194047 has 4 divisors (see below), whose sum is σ = 12202560. Its totient is φ = 12185536.

The previous prime is 12194027. The next prime is 12194059. The reversal of 12194047 is 74049121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12194047 - 2⁷ = 12193919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12194027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1522 + ... + 5167.

It is an arithmetic number, because the mean of its divisors is an integer number (3050640).

Almost surely, 2^12194047 is an apocalyptic number.

12194047 is a deficient number, since it is larger than the sum of its proper divisors (8513).

12194047 is an equidigital number, since it uses as much as digits as its factorization.

12194047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8512.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 12194047 is about 3491.9975658640. The cubic root of 12194047 is about 230.1703023508.

The spelling of 12194047 in words is "twelve million, one hundred ninety-four thousand, forty-seven".