729643984 has 20 divisors (see below), whose sum is σ = 1415078080. Its totient is φ = 364462560.

The previous prime is 729643969. The next prime is 729644011. The reversal of 729643984 is 489346927.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5322 + ... + 38569.

It is an arithmetic number, because the mean of its divisors is an integer number (70753904).

Almost surely, 2^729643984 is an apocalyptic number.

It is an amenable number.

729643984 is a deficient number, since it is larger than the sum of its proper divisors (685434096).

729643984 is a wasteful number, since it uses less digits than its factorization.

729643984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44938 (or 44932 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 52.

The square root of 729643984 is about 27011.9229970767. The cubic root of 729643984 is about 900.2649359940.

The spelling of 729643984 in words is "seven hundred twenty-nine million, six hundred forty-three thousand, nine hundred eighty-four".