200006921 has 8 divisors (see below), whose sum is σ = 211898880. Its totient is φ = 188129088.

The previous prime is 200006879. The next prime is 200006923. The reversal of 200006921 is 129600002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200006921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200006893 and 200006902.

It is not an unprimeable number, because it can be changed into a prime (200006923) 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 7 ways as a sum of consecutive naturals, for example, 44060 + ... + 48386.

It is an arithmetic number, because the mean of its divisors is an integer number (26487360).

Almost surely, 2^200006921 is an apocalyptic number.

It is an amenable number.

200006921 is a deficient number, since it is larger than the sum of its proper divisors (11891959).

200006921 is a wasteful number, since it uses less digits than its factorization.

200006921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7063.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 200006921 is about 14142.3803159157. The cubic root of 200006921 is about 584.8102932737.

Adding to 200006921 its reverse (129600002), we get a palindrome (329606923).

The spelling of 200006921 in words is "two hundred million, six thousand, nine hundred twenty-one".