1002000089 has 2 divisors, whose sum is σ = 1002000090. Its totient is φ = 1002000088.

The previous prime is 1002000047. The next prime is 1002000101. The reversal of 1002000089 is 9800002001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 945870025 + 56130064 = 30755^2 + 7492^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002000089 - 2¹² = 1001995993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1002000089.

It is not a weakly prime, because it can be changed into another prime (1002000029) 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 as a sum of consecutive naturals, namely, 501000044 + 501000045.

It is an arithmetic number, because the mean of its divisors is an integer number (501000045).

Almost surely, 2^1002000089 is an apocalyptic number.

It is an amenable number.

1002000089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002000089 is an equidigital number, since it uses as much as digits as its factorization.

1002000089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1002000089 is about 31654.3849884972. The cubic root of 1002000089 is about 1000.6662523426. Note that the first 3 decimals are identical.

The spelling of 1002000089 in words is "one billion, two million, eighty-nine", and thus it is an aban number and an uban number.