729984755 has 4 divisors (see below), whose sum is σ = 875981712. Its totient is φ = 583987800.

The previous prime is 729984737. The next prime is 729984791. The reversal of 729984755 is 557489927.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 729984755 - 2²⁰ = 728936179 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 729984755.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72998471 + ... + 72998480.

It is an arithmetic number, because the mean of its divisors is an integer number (218995428).

Almost surely, 2^729984755 is an apocalyptic number.

729984755 is a deficient number, since it is larger than the sum of its proper divisors (145996957).

729984755 is a wasteful number, since it uses less digits than its factorization.

729984755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145996956.

The product of its digits is 6350400, while the sum is 56.

The square root of 729984755 is about 27018.2300493574. The cubic root of 729984755 is about 900.4050666339.

The spelling of 729984755 in words is "seven hundred twenty-nine million, nine hundred eighty-four thousand, seven hundred fifty-five".