1002289 has 2 divisors, whose sum is σ = 1002290. Its totient is φ = 1002288.

The previous prime is 1002263. The next prime is 1002299. The reversal of 1002289 is 9822001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 984064 + 18225 = 992^2 + 135^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002289 - 2⁵ = 1002257 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501144 + 501145.

It is an arithmetic number, because the mean of its divisors is an integer number (501145).

2^1002289 is an apocalyptic number.

It is an amenable number.

1002289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002289 is an equidigital number, since it uses as much as digits as its factorization.

1002289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1002289 is about 1001.1438458084. The cubic root of 1002289 is about 100.0762418570.

Subtracting from 1002289 its product of nonzero digits (288), we obtain a palindrome (1002001).

The spelling of 1002289 in words is "one million, two thousand, two hundred eighty-nine".