200000989 has 2 divisors, whose sum is σ = 200000990. Its totient is φ = 200000988.

The previous prime is 200000987. The next prime is 200001001. The reversal of 200000989 is 989000002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119180889 + 80820100 = 10917^2 + 8990^2 .

It is a cyclic number.

It is not a de Polignac number, because 200000989 - 2¹ = 200000987 is a prime.

Together with 200000987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200000987) 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, 100000494 + 100000495.

It is an arithmetic number, because the mean of its divisors is an integer number (100000495).

Almost surely, 2^200000989 is an apocalyptic number.

It is an amenable number.

200000989 is a deficient number, since it is larger than the sum of its proper divisors (1).

200000989 is an equidigital number, since it uses as much as digits as its factorization.

200000989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 200000989 is about 14142.1705901181. The cubic root of 200000989 is about 584.8045115922.

The spelling of 200000989 in words is "two hundred million, nine hundred eighty-nine", and thus it is an aban number.