224001329 has 2 divisors, whose sum is σ = 224001330. Its totient is φ = 224001328.

The previous prime is 224001311. The next prime is 224001331. The reversal of 224001329 is 923100422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180176929 + 43824400 = 13423^2 + 6620^2 .

It is a cyclic number.

It is not a de Polignac number, because 224001329 - 2⁸ = 224001073 is a prime.

Together with 224001331, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (224001929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112000664 + 112000665.

It is an arithmetic number, because the mean of its divisors is an integer number (112000665).

Almost surely, 2^224001329 is an apocalyptic number.

It is an amenable number.

224001329 is a deficient number, since it is larger than the sum of its proper divisors (1).

224001329 is an equidigital number, since it uses as much as digits as its factorization.

224001329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 224001329 is about 14966.6739458037. The cubic root of 224001329 is about 607.3189954521.

The spelling of 224001329 in words is "two hundred twenty-four million, one thousand, three hundred twenty-nine".