729696291 has 16 divisors (see below), whose sum is σ = 994957824. Its totient is φ = 475477344.

The previous prime is 729696281. The next prime is 729696299. The reversal of 729696291 is 192696927.

729696291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-729696291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (729696299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117240 + ... + 123306.

It is an arithmetic number, because the mean of its divisors is an integer number (62184864).

Almost surely, 2^729696291 is an apocalyptic number.

729696291 is a deficient number, since it is larger than the sum of its proper divisors (265261533).

729696291 is a wasteful number, since it uses less digits than its factorization.

729696291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6970.

The product of its digits is 734832, while the sum is 51.

The square root of 729696291 is about 27012.8912003140. The cubic root of 729696291 is about 900.2864483269.

The spelling of 729696291 in words is "seven hundred twenty-nine million, six hundred ninety-six thousand, two hundred ninety-one".