729944 has 8 divisors (see below), whose sum is σ = 1368660. Its totient is φ = 364968.

The previous prime is 729943. The next prime is 729947. The reversal of 729944 is 449927.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-4 number, since 4×729944⁴ (a number of 25 digits) contains 4444 as substring.

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 729944.

It is not an unprimeable number, because it can be changed into a prime (729941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45614 + ... + 45629.

2⁷²⁹⁹⁴⁴ is an apocalyptic number.

It is an amenable number.

729944 is a deficient number, since it is larger than the sum of its proper divisors (638716).

729944 is a wasteful number, since it uses less digits than its factorization.

729944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91249 (or 91245 counting only the distinct ones).

The product of its digits is 18144, while the sum is 35.

The square root of 729944 is about 854.3676023820. The cubic root of 729944 is about 90.0388309804.

The spelling of 729944 in words is "seven hundred twenty-nine thousand, nine hundred forty-four".