730109 has 4 divisors (see below), whose sum is σ = 742140. Its totient is φ = 718080.

The previous prime is 730091. The next prime is 730111. The reversal of 730109 is 901037.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41209 + 688900 = 203^2 + 830^2 .

It is a cyclic number.

It is not a de Polignac number, because 730109 - 2¹² = 726013 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 (730139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5924 + ... + 6045.

It is an arithmetic number, because the mean of its divisors is an integer number (185535).

2⁷³⁰¹⁰⁹ is an apocalyptic number.

It is an amenable number.

730109 is a deficient number, since it is larger than the sum of its proper divisors (12031).

730109 is a wasteful number, since it uses less digits than its factorization.

730109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12030.

The product of its (nonzero) digits is 189, while the sum is 20.

The square root of 730109 is about 854.4641595760. The cubic root of 730109 is about 90.0456147372.

The spelling of 730109 in words is "seven hundred thirty thousand, one hundred nine".