729047 has 8 divisors (see below), whose sum is σ = 801792. Its totient is φ = 657400.

The previous prime is 729041. The next prime is 729059. The reversal of 729047 is 740927.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-729047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1928 + ... + 2274.

It is an arithmetic number, because the mean of its divisors is an integer number (100224).

2⁷²⁹⁰⁴⁷ is an apocalyptic number.

729047 is a deficient number, since it is larger than the sum of its proper divisors (72745).

729047 is a wasteful number, since it uses less digits than its factorization.

729047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 729047 is about 853.8424913296. The cubic root of 729047 is about 90.0019341148.

It can be divided in two parts, 7290 and 47, that added together give a palindrome (7337).

The spelling of 729047 in words is "seven hundred twenty-nine thousand, forty-seven".