729348889 has 2 divisors, whose sum is σ = 729348890. Its totient is φ = 729348888.

The previous prime is 729348881. The next prime is 729348923. The reversal of 729348889 is 988843927.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 718240000 + 11108889 = 26800^2 + 3333^2 .

It is an emirp because it is prime and its reverse (988843927) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 729348889 - 2³ = 729348881 is a prime.

It is not a weakly prime, because it can be changed into another prime (729348881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364674444 + 364674445.

It is an arithmetic number, because the mean of its divisors is an integer number (364674445).

Almost surely, 2^729348889 is an apocalyptic number.

It is an amenable number.

729348889 is a deficient number, since it is larger than the sum of its proper divisors (1).

729348889 is an equidigital number, since it uses as much as digits as its factorization.

729348889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6967296, while the sum is 58.

The square root of 729348889 is about 27006.4601345678. The cubic root of 729348889 is about 900.1435528218.

The spelling of 729348889 in words is "seven hundred twenty-nine million, three hundred forty-eight thousand, eight hundred eighty-nine".