729444 has 24 divisors (see below), whose sum is σ = 1723680. Its totient is φ = 240064.

The previous prime is 729413. The next prime is 729451. The reversal of 729444 is 444927.

It is a congruent number.

It is an unprimeable number.

729444 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 727 + ... + 1409.

It is an arithmetic number, because the mean of its divisors is an integer number (71820).

2⁷²⁹⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

729444 is an abundant number, since it is smaller than the sum of its proper divisors (994236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

729444 is a wasteful number, since it uses less digits than its factorization.

729444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779 (or 777 counting only the distinct ones).

The product of its digits is 8064, while the sum is 30.

The square root of 729444 is about 854.0749381641. The cubic root of 729444 is about 90.0182678967.

The spelling of 729444 in words is "seven hundred twenty-nine thousand, four hundred forty-four".