729308089 has 2 divisors, whose sum is σ = 729308090. Its totient is φ = 729308088.

The previous prime is 729308087. The next prime is 729308093. The reversal of 729308089 is 980803927.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 692584489 + 36723600 = 26317^2 + 6060^2 .

It is a cyclic number.

It is not a de Polignac number, because 729308089 - 2¹ = 729308087 is a prime.

Together with 729308087, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (729308087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364654044 + 364654045.

It is an arithmetic number, because the mean of its divisors is an integer number (364654045).

Almost surely, 2^729308089 is an apocalyptic number.

It is an amenable number.

729308089 is a deficient number, since it is larger than the sum of its proper divisors (1).

729308089 is an equidigital number, since it uses as much as digits as its factorization.

729308089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 729308089 is about 27005.7047491822. The cubic root of 729308089 is about 900.1267677402.

The spelling of 729308089 in words is "seven hundred twenty-nine million, three hundred eight thousand, eighty-nine".