729738129 has 16 divisors (see below), whose sum is σ = 977785344. Its totient is φ = 484099200.

The previous prime is 729738127. The next prime is 729738179. The reversal of 729738129 is 921837927.

It is not a de Polignac number, because 729738129 - 2¹ = 729738127 is a prime.

It is not an unprimeable number, because it can be changed into a prime (729738127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 845152 + ... + 846014.

It is an arithmetic number, because the mean of its divisors is an integer number (61111584).

Almost surely, 2^729738129 is an apocalyptic number.

It is an amenable number.

729738129 is a deficient number, since it is larger than the sum of its proper divisors (248047215).

729738129 is a wasteful number, since it uses less digits than its factorization.

729738129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1928.

The product of its digits is 381024, while the sum is 48.

The square root of 729738129 is about 27013.6655972491. The cubic root of 729738129 is about 900.3036543275.

The spelling of 729738129 in words is "seven hundred twenty-nine million, seven hundred thirty-eight thousand, one hundred twenty-nine".