12291433 has 8 divisors (see below), whose sum is σ = 15324480. Its totient is φ = 9577680.

The previous prime is 12291427. The next prime is 12291443. The reversal of 12291433 is 33419221.

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

It is not a de Polignac number, because 12291433 - 2⁹ = 12290921 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12291398 and 12291407.

It is not an unprimeable number, because it can be changed into a prime (12291403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79738 + ... + 79891.

It is an arithmetic number, because the mean of its divisors is an integer number (1915560).

Almost surely, 2^12291433 is an apocalyptic number.

It is an amenable number.

12291433 is a deficient number, since it is larger than the sum of its proper divisors (3033047).

12291433 is a wasteful number, since it uses less digits than its factorization.

12291433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159647.

The product of its digits is 1296, while the sum is 25.

The square root of 12291433 is about 3505.9140035089. The cubic root of 12291433 is about 230.7814190172.

It can be divided in two parts, 1229 and 1433, that added together give a palindrome (2662).

The spelling of 12291433 in words is "twelve million, two hundred ninety-one thousand, four hundred thirty-three".