12191433 has 8 divisors (see below), whose sum is σ = 16285728. Its totient is φ = 8112384.

The previous prime is 12191429. The next prime is 12191441. The reversal of 12191433 is 33419121.

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

It is not a de Polignac number, because 12191433 - 2² = 12191429 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12191423) 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 7 ways as a sum of consecutive naturals, for example, 1791 + ... + 5252.

It is an arithmetic number, because the mean of its divisors is an integer number (2035716).

Almost surely, 2^12191433 is an apocalyptic number.

It is an amenable number.

12191433 is a deficient number, since it is larger than the sum of its proper divisors (4094295).

12191433 is an equidigital number, since it uses as much as digits as its factorization.

12191433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7623.

The product of its digits is 648, while the sum is 24.

The square root of 12191433 is about 3491.6232614645. The cubic root of 12191433 is about 230.1538542110.

The spelling of 12191433 in words is "twelve million, one hundred ninety-one thousand, four hundred thirty-three".