200408689 has 4 divisors (see below), whose sum is σ = 215824756. Its totient is φ = 184992624.

The previous prime is 200408653. The next prime is 200408717. The reversal of 200408689 is 986804002.

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 20178064 + 180230625 = 4492^2 + 13425^2 .

It is a cyclic number.

It is not a de Polignac number, because 200408689 - 2¹¹ = 200406641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200408609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7708014 + ... + 7708039.

It is an arithmetic number, because the mean of its divisors is an integer number (53956189).

Almost surely, 2^200408689 is an apocalyptic number.

It is an amenable number.

200408689 is a deficient number, since it is larger than the sum of its proper divisors (15416067).

200408689 is a wasteful number, since it uses less digits than its factorization.

200408689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15416066.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 200408689 is about 14156.5775878211. The cubic root of 200408689 is about 585.2016145847.

The spelling of 200408689 in words is "two hundred million, four hundred eight thousand, six hundred eighty-nine".