1003889 has 2 divisors, whose sum is σ = 1003890. Its totient is φ = 1003888.

The previous prime is 1003879. The next prime is 1003897. The reversal of 1003889 is 9883001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 667489 + 336400 = 817^2 + 580^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1003889 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1003819) 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, 501944 + 501945.

It is an arithmetic number, because the mean of its divisors is an integer number (501945).

2^1003889 is an apocalyptic number.

It is an amenable number.

1003889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1003889 is an equidigital number, since it uses as much as digits as its factorization.

1003889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 1003889 is about 1001.9426131271. The cubic root of 1003889 is about 100.1294656475.

The spelling of 1003889 in words is "one million, three thousand, eight hundred eighty-nine".