200729 has 4 divisors (see below), whose sum is σ = 202020. Its totient is φ = 199440.

The previous prime is 200723. The next prime is 200731. The reversal of 200729 is 927002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 927002 = 2 ⋅463501.

It can be written as a sum of positive squares in 2 ways, for example, as 2704 + 198025 = 52^2 + 445^2 .

It is a cyclic number.

It is not a de Polignac number, because 200729 - 2⁴ = 200713 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 200729.

It is not an unprimeable number, because it can be changed into a prime (200723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 374 + ... + 735.

It is an arithmetic number, because the mean of its divisors is an integer number (50505).

2²⁰⁰⁷²⁹ is an apocalyptic number.

It is an amenable number.

200729 is a deficient number, since it is larger than the sum of its proper divisors (1291).

200729 is a wasteful number, since it uses less digits than its factorization.

200729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 200729 is about 448.0279009169. The cubic root of 200729 is about 58.5513222395.

It can be divided in two parts, 200 and 729, that added together give a palindrome (929).

The spelling of 200729 in words is "two hundred thousand, seven hundred twenty-nine".