200211989 has 4 divisors (see below), whose sum is σ = 200269356. Its totient is φ = 200154624.

The previous prime is 200211971. The next prime is 200212003. The reversal of 200211989 is 989112002.

It is a happy number.

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 66994225 + 133217764 = 8185^2 + 11542^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200211989 is a prime.

It is a super-2 number, since 2×200211989² = 80169681078672242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200211929) 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 in 3 ways as a sum of consecutive naturals, for example, 23084 + ... + 30549.

It is an arithmetic number, because the mean of its divisors is an integer number (50067339).

Almost surely, 2^200211989 is an apocalyptic number.

It is an amenable number.

200211989 is a deficient number, since it is larger than the sum of its proper divisors (57367).

200211989 is an equidigital number, since it uses as much as digits as its factorization.

200211989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57366.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 200211989 is about 14149.6285816978. The cubic root of 200211989 is about 585.0100945491.

The spelling of 200211989 in words is "two hundred million, two hundred eleven thousand, nine hundred eighty-nine".