43223429 has 2 divisors, whose sum is σ = 43223430. Its totient is φ = 43223428.

The previous prime is 43223407. The next prime is 43223431. The reversal of 43223429 is 92432234.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24750625 + 18472804 = 4975^2 + 4298^2 .

It is a cyclic number.

It is not a de Polignac number, because 43223429 - 2²⁴ = 26446213 is a prime.

Together with 43223431, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43223489) 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 as a sum of consecutive naturals, namely, 21611714 + 21611715.

It is an arithmetic number, because the mean of its divisors is an integer number (21611715).

Almost surely, 2^43223429 is an apocalyptic number.

It is an amenable number.

43223429 is a deficient number, since it is larger than the sum of its proper divisors (1).

43223429 is an equidigital number, since it uses as much as digits as its factorization.

43223429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 29.

The square root of 43223429 is about 6574.4527528913. The cubic root of 43223429 is about 350.9455493547.

The spelling of 43223429 in words is "forty-three million, two hundred twenty-three thousand, four hundred twenty-nine".