200209987 has 2 divisors, whose sum is σ = 200209988. Its totient is φ = 200209986.

The previous prime is 200209981. The next prime is 200210029. The reversal of 200209987 is 789902002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 200209987 - 2²⁷ = 65992259 is a prime.

It is not a weakly prime, because it can be changed into another prime (200209981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100104993 + 100104994.

It is an arithmetic number, because the mean of its divisors is an integer number (100104994).

Almost surely, 2^200209987 is an apocalyptic number.

200209987 is a deficient number, since it is larger than the sum of its proper divisors (1).

200209987 is an equidigital number, since it uses as much as digits as its factorization.

200209987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 200209987 is about 14149.5578376146. The cubic root of 200209987 is about 585.0081446257.

The spelling of 200209987 in words is "two hundred million, two hundred nine thousand, nine hundred eighty-seven".