1289363 has 2 divisors, whose sum is σ = 1289364. Its totient is φ = 1289362.

The previous prime is 1289341. The next prime is 1289371. The reversal of 1289363 is 3639821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1289363 - 2¹² = 1285267 is a prime.

It is not a weakly prime, because it can be changed into another prime (1289303) 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, 644681 + 644682.

It is an arithmetic number, because the mean of its divisors is an integer number (644682).

2^1289363 is an apocalyptic number.

1289363 is a deficient number, since it is larger than the sum of its proper divisors (1).

1289363 is an equidigital number, since it uses as much as digits as its factorization.

1289363 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 32.

The square root of 1289363 is about 1135.5012109197. The cubic root of 1289363 is about 108.8408023056.

The spelling of 1289363 in words is "one million, two hundred eighty-nine thousand, three hundred sixty-three".