200671409 has 4 divisors (see below), whose sum is σ = 204457716. Its totient is φ = 196885104.

The previous prime is 200671363. The next prime is 200671423. The reversal of 200671409 is 904176002.

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 109411600 + 91259809 = 10460^2 + 9553^2 .

It is a cyclic number.

It is not a de Polignac number, because 200671409 - 2²⁰ = 199622833 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (200671459) 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, 1893074 + ... + 1893179.

It is an arithmetic number, because the mean of its divisors is an integer number (51114429).

Almost surely, 2^200671409 is an apocalyptic number.

It is an amenable number.

200671409 is a deficient number, since it is larger than the sum of its proper divisors (3786307).

200671409 is an equidigital number, since it uses as much as digits as its factorization.

200671409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3786306.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 200671409 is about 14165.8536276498. The cubic root of 200671409 is about 585.4572206593.

The spelling of 200671409 in words is "two hundred million, six hundred seventy-one thousand, four hundred nine".