200440189 has 2 divisors, whose sum is σ = 200440190. Its totient is φ = 200440188.

The previous prime is 200440181. The next prime is 200440231. The reversal of 200440189 is 981044002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115025625 + 85414564 = 10725^2 + 9242^2 .

It is a cyclic number.

It is not a de Polignac number, because 200440189 - 2³ = 200440181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200440181) 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 as a sum of consecutive naturals, namely, 100220094 + 100220095.

It is an arithmetic number, because the mean of its divisors is an integer number (100220095).

Almost surely, 2^200440189 is an apocalyptic number.

It is an amenable number.

200440189 is a deficient number, since it is larger than the sum of its proper divisors (1).

200440189 is an equidigital number, since it uses as much as digits as its factorization.

200440189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 200440189 is about 14157.6901011429. The cubic root of 200440189 is about 585.2322734104.

The spelling of 200440189 in words is "two hundred million, four hundred forty thousand, one hundred eighty-nine".