729908 has 12 divisors (see below), whose sum is σ = 1284192. Its totient is φ = 363000.

The previous prime is 729907. The next prime is 729913. The reversal of 729908 is 809927.

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 729908.

It is not an unprimeable number, because it can be changed into a prime (729907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 641 + ... + 1367.

It is an arithmetic number, because the mean of its divisors is an integer number (107016).

2⁷²⁹⁹⁰⁸ is an apocalyptic number.

It is an amenable number.

729908 is a deficient number, since it is larger than the sum of its proper divisors (554284).

729908 is a wasteful number, since it uses less digits than its factorization.

729908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982 (or 980 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 729908 is about 854.3465339076. The cubic root of 729908 is about 90.0373507521.

The spelling of 729908 in words is "seven hundred twenty-nine thousand, nine hundred eight".