12291443 has 2 divisors, whose sum is σ = 12291444. Its totient is φ = 12291442.

The previous prime is 12291427. The next prime is 12291451. The reversal of 12291443 is 34419221.

12291443 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12291443 - 2⁴ = 12291427 is a prime.

It is not a weakly prime, because it can be changed into another prime (12291403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6145721 + 6145722.

It is an arithmetic number, because the mean of its divisors is an integer number (6145722).

Almost surely, 2^12291443 is an apocalyptic number.

12291443 is a deficient number, since it is larger than the sum of its proper divisors (1).

12291443 is an equidigital number, since it uses as much as digits as its factorization.

12291443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 26.

The square root of 12291443 is about 3505.9154296703. The cubic root of 12291443 is about 230.7814816032.

The spelling of 12291443 in words is "twelve million, two hundred ninety-one thousand, four hundred forty-three".