729973999 has 16 divisors (see below), whose sum is σ = 795535776. Its totient is φ = 667008000.

The previous prime is 729973997. The next prime is 729974027. The reversal of 729973999 is 999379927.

729973999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 729973999 - 2¹ = 729973997 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 729973999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729973991) 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, 377064 + ... + 378994.

It is an arithmetic number, because the mean of its divisors is an integer number (49720986).

Almost surely, 2^729973999 is an apocalyptic number.

729973999 is a deficient number, since it is larger than the sum of its proper divisors (65561777).

729973999 is a wasteful number, since it uses less digits than its factorization.

729973999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2586.

The product of its digits is 17360406, while the sum is 64.

The square root of 729973999 is about 27018.0309978355. The cubic root of 729973999 is about 900.4006442564.

The spelling of 729973999 in words is "seven hundred twenty-nine million, nine hundred seventy-three thousand, nine hundred ninety-nine".