200815969 has 2 divisors, whose sum is σ = 200815970. Its totient is φ = 200815968.

The previous prime is 200815963. The next prime is 200816003. The reversal of 200815969 is 969518002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185504400 + 15311569 = 13620^2 + 3913^2 .

It is a cyclic number.

It is not a de Polignac number, because 200815969 - 2⁷ = 200815841 is a prime.

It is a super-2 number, since 2×200815969² = 80654106810817922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (200815963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100407984 + 100407985.

It is an arithmetic number, because the mean of its divisors is an integer number (100407985).

Almost surely, 2^200815969 is an apocalyptic number.

It is an amenable number.

200815969 is a deficient number, since it is larger than the sum of its proper divisors (1).

200815969 is an equidigital number, since it uses as much as digits as its factorization.

200815969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 200815969 is about 14170.9551195394. The cubic root of 200815969 is about 585.5977711269.

The spelling of 200815969 in words is "two hundred million, eight hundred fifteen thousand, nine hundred sixty-nine".