1289003 has 2 divisors, whose sum is σ = 1289004. Its totient is φ = 1289002.

The previous prime is 1288997. The next prime is 1289009. The reversal of 1289003 is 3009821.

It is a balanced prime because it is at equal distance from previous prime (1288997) and next prime (1289009).

It is a cyclic number.

It is not a de Polignac number, because 1289003 - 2⁶ = 1288939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1289003.

It is not a weakly prime, because it can be changed into another prime (1289009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 644501 + 644502.

It is an arithmetic number, because the mean of its divisors is an integer number (644502).

2^1289003 is an apocalyptic number.

1289003 is a deficient number, since it is larger than the sum of its proper divisors (1).

1289003 is an equidigital number, since it uses as much as digits as its factorization.

1289003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1289003 is about 1135.3426795466. The cubic root of 1289003 is about 108.8306716348.

The spelling of 1289003 in words is "one million, two hundred eighty-nine thousand, three".