12196091 has 4 divisors (see below), whose sum is σ = 12203400. Its totient is φ = 12188784.

The previous prime is 12196087. The next prime is 12196109. The reversal of 12196091 is 19069121.

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 12196091 - 2² = 12196087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12196001) 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, 215 + ... + 4943.

It is an arithmetic number, because the mean of its divisors is an integer number (3050850).

Almost surely, 2^12196091 is an apocalyptic number.

12196091 is a deficient number, since it is larger than the sum of its proper divisors (7309).

12196091 is an equidigital number, since it uses as much as digits as its factorization.

12196091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7308.

The product of its (nonzero) digits is 972, while the sum is 29.

The square root of 12196091 is about 3492.2902227621. The cubic root of 12196091 is about 230.1831622272.

The spelling of 12196091 in words is "twelve million, one hundred ninety-six thousand, ninety-one".