729491 has 12 divisors (see below), whose sum is σ = 875952. Its totient is φ = 595056.

The previous prime is 729473. The next prime is 729493. The reversal of 729491 is 194927.

It is not a de Polignac number, because 729491 - 2¹⁴ = 713107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729493) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3605 + ... + 3801.

It is an arithmetic number, because the mean of its divisors is an integer number (72996).

2⁷²⁹⁴⁹¹ is an apocalyptic number.

729491 is a deficient number, since it is larger than the sum of its proper divisors (146461).

729491 is a wasteful number, since it uses less digits than its factorization.

729491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250 (or 227 counting only the distinct ones).

The product of its digits is 4536, while the sum is 32.

The square root of 729491 is about 854.1024528708. The cubic root of 729491 is about 90.0202012266.

The spelling of 729491 in words is "seven hundred twenty-nine thousand, four hundred ninety-one".