729443723 has 2 divisors, whose sum is σ = 729443724. Its totient is φ = 729443722.

The previous prime is 729443719. The next prime is 729443731. The reversal of 729443723 is 327344927.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 729443723 - 2² = 729443719 is a prime.

It is not a weakly prime, because it can be changed into another prime (729443753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364721861 + 364721862.

It is an arithmetic number, because the mean of its divisors is an integer number (364721862).

Almost surely, 2^729443723 is an apocalyptic number.

729443723 is a deficient number, since it is larger than the sum of its proper divisors (1).

729443723 is an equidigital number, since it uses as much as digits as its factorization.

729443723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 41.

The square root of 729443723 is about 27008.2158425913. The cubic root of 729443723 is about 900.1825650218.

It can be divided in two parts, 72944 and 3723, that added together give a palindrome (76667).

The spelling of 729443723 in words is "seven hundred twenty-nine million, four hundred forty-three thousand, seven hundred twenty-three".