200891089 has 4 divisors (see below), whose sum is σ = 229589824. Its totient is φ = 172192356.

The previous prime is 200891081. The next prime is 200891101. The reversal of 200891089 is 980198002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 200891089 - 2³ = 200891081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200891081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14349357 + ... + 14349370.

It is an arithmetic number, because the mean of its divisors is an integer number (57397456).

Almost surely, 2^200891089 is an apocalyptic number.

It is an amenable number.

200891089 is a deficient number, since it is larger than the sum of its proper divisors (28698735).

200891089 is an equidigital number, since it uses as much as digits as its factorization.

200891089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28698734.

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 200891089 is about 14173.6053634917. The cubic root of 200891089 is about 585.6707809590.

The spelling of 200891089 in words is "two hundred million, eight hundred ninety-one thousand, eighty-nine".