1002000997 has 2 divisors, whose sum is σ = 1002000998. Its totient is φ = 1002000996.

The previous prime is 1002000991. The next prime is 1002001057. The reversal of 1002000997 is 7990002001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1001975716 + 25281 = 31654^2 + 159^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002000997 - 2⁷ = 1002000869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002000991) 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 as a sum of consecutive naturals, namely, 501000498 + 501000499.

It is an arithmetic number, because the mean of its divisors is an integer number (501000499).

Almost surely, 2^1002000997 is an apocalyptic number.

It is an amenable number.

1002000997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002000997 is an equidigital number, since it uses as much as digits as its factorization.

1002000997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 1002000997 is about 31654.3993308987. The cubic root of 1002000997 is about 1000.6665546062. Note that the first 3 decimals are identical.

Adding to 1002000997 its reverse (7990002001), we get a palindrome (8992002998).

The spelling of 1002000997 in words is "one billion, two million, nine hundred ninety-seven", and thus it is an aban number.