2000209997 has 2 divisors, whose sum is σ = 2000209998. Its totient is φ = 2000209996.

The previous prime is 2000209979. The next prime is 2000210053. The reversal of 2000209997 is 7999020002.

Together with previous prime (2000209979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1129900996 + 870309001 = 33614^2 + 29501^2 .

It is a cyclic number.

It is not a de Polignac number, because 2000209997 - 2¹⁸ = 1999947853 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2000209997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2000209907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000104998 + 1000104999.

It is an arithmetic number, because the mean of its divisors is an integer number (1000104999).

Almost surely, 2^2000209997 is an apocalyptic number.

It is an amenable number.

2000209997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2000209997 is an equidigital number, since it uses as much as digits as its factorization.

2000209997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 2000209997 is about 44723.7073262045. The cubic root of 2000209997 is about 1259.9651449584.

Adding to 2000209997 its reverse (7999020002), we get a palindrome (9999229999).

The spelling of 2000209997 in words is "two billion, two hundred nine thousand, nine hundred ninety-seven".