729432323 has 2 divisors, whose sum is σ = 729432324. Its totient is φ = 729432322.

The previous prime is 729432293. The next prime is 729432343. The reversal of 729432323 is 323234927.

It is a strong prime.

It is an emirp because it is prime and its reverse (323234927) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-729432323 is a prime.

It is a Sophie Germain prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (729432343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364716161 + 364716162.

It is an arithmetic number, because the mean of its divisors is an integer number (364716162).

Almost surely, 2^729432323 is an apocalyptic number.

729432323 is a deficient number, since it is larger than the sum of its proper divisors (1).

729432323 is an equidigital number, since it uses as much as digits as its factorization.

729432323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 35.

The square root of 729432323 is about 27008.0047948752. The cubic root of 729432323 is about 900.1778755420.

The spelling of 729432323 in words is "seven hundred twenty-nine million, four hundred thirty-two thousand, three hundred twenty-three".