729439163 has 2 divisors, whose sum is σ = 729439164. Its totient is φ = 729439162.

The previous prime is 729439147. The next prime is 729439171. The reversal of 729439163 is 361934927.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 729439163 - 2⁴ = 729439147 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (729439063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364719581 + 364719582.

It is an arithmetic number, because the mean of its divisors is an integer number (364719582).

Almost surely, 2^729439163 is an apocalyptic number.

729439163 is a deficient number, since it is larger than the sum of its proper divisors (1).

729439163 is an equidigital number, since it uses as much as digits as its factorization.

729439163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 44.

The square root of 729439163 is about 27008.1314237028. The cubic root of 729439163 is about 900.1806892358.

The spelling of 729439163 in words is "seven hundred twenty-nine million, four hundred thirty-nine thousand, one hundred sixty-three".