729983 has 4 divisors (see below), whose sum is σ = 731808. Its totient is φ = 728160.

The previous prime is 729979. The next prime is 729991. The reversal of 729983 is 389927.

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

It is a cyclic number.

It is not a de Polignac number, because 729983 - 2² = 729979 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 729983.

It is not an unprimeable number, because it can be changed into a prime (729913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23 + ... + 1208.

It is an arithmetic number, because the mean of its divisors is an integer number (182952).

2⁷²⁹⁹⁸³ is an apocalyptic number.

729983 is a deficient number, since it is larger than the sum of its proper divisors (1825).

729983 is a wasteful number, since it uses less digits than its factorization.

729983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1824.

The product of its digits is 27216, while the sum is 38.

The square root of 729983 is about 854.3904259763. The cubic root of 729983 is about 90.0404345061.

The spelling of 729983 in words is "seven hundred twenty-nine thousand, nine hundred eighty-three".