729091 has 8 divisors (see below), whose sum is σ = 806400. Its totient is φ = 653640.

The previous prime is 729073. The next prime is 729139. The reversal of 729091 is 190927.

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

It is a cyclic number.

It is not a de Polignac number, because 729091 - 2⁵ = 729059 is a prime.

It is a Duffinian 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, 450 + ... + 1288.

It is an arithmetic number, because the mean of its divisors is an integer number (100800).

2⁷²⁹⁰⁹¹ is an apocalyptic number.

729091 is a deficient number, since it is larger than the sum of its proper divisors (77309).

729091 is a wasteful number, since it uses less digits than its factorization.

729091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 729091 is about 853.8682568172. The cubic root of 729091 is about 90.0037447002.

It can be divided in two parts, 7290 and 91, that added together give a triangular number (7381 = T₁₂₁).

The spelling of 729091 in words is "seven hundred twenty-nine thousand, ninety-one".