729803729 has 2 divisors, whose sum is σ = 729803730. Its totient is φ = 729803728.

The previous prime is 729803681. The next prime is 729803741. The reversal of 729803729 is 927308927.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 582739600 + 147064129 = 24140^2 + 12127^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-729803729 is a prime.

It is a super-2 number, since 2×729803729² = 1065226965724610882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (729803759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364901864 + 364901865.

It is an arithmetic number, because the mean of its divisors is an integer number (364901865).

Almost surely, 2^729803729 is an apocalyptic number.

It is an amenable number.

729803729 is a deficient number, since it is larger than the sum of its proper divisors (1).

729803729 is an equidigital number, since it uses as much as digits as its factorization.

729803729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 381024, while the sum is 47.

The square root of 729803729 is about 27014.8797702303. The cubic root of 729803729 is about 900.3306311967.

The spelling of 729803729 in words is "seven hundred twenty-nine million, eight hundred three thousand, seven hundred twenty-nine".