729216269 has 2 divisors, whose sum is σ = 729216270. Its totient is φ = 729216268.

The previous prime is 729216259. The next prime is 729216289. The reversal of 729216269 is 962612927.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 503104900 + 226111369 = 22430^2 + 15037^2 .

It is a cyclic number.

It is not a de Polignac number, because 729216269 - 2⁴ = 729216253 is a prime.

It is a super-2 number, since 2×729216269² = 1063512733948560722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (729216259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364608134 + 364608135.

It is an arithmetic number, because the mean of its divisors is an integer number (364608135).

Almost surely, 2^729216269 is an apocalyptic number.

It is an amenable number.

729216269 is a deficient number, since it is larger than the sum of its proper divisors (1).

729216269 is an equidigital number, since it uses as much as digits as its factorization.

729216269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 44.

The square root of 729216269 is about 27004.0046844908. The cubic root of 729216269 is about 900.0889907889.

The spelling of 729216269 in words is "seven hundred twenty-nine million, two hundred sixteen thousand, two hundred sixty-nine".