1289366 has 16 divisors (see below), whose sum is σ = 2107728. Its totient is φ = 588000.

The previous prime is 1289363. The next prime is 1289371. The reversal of 1289366 is 6639821.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1289363) 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 in 7 ways as a sum of consecutive naturals, for example, 2381 + ... + 2871.

It is an arithmetic number, because the mean of its divisors is an integer number (131733).

2^1289366 is an apocalyptic number.

1289366 is a deficient number, since it is larger than the sum of its proper divisors (818362).

1289366 is a wasteful number, since it uses less digits than its factorization.

1289366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607.

The product of its digits is 15552, while the sum is 35.

The square root of 1289366 is about 1135.5025319214. The cubic root of 1289366 is about 108.8408867199.

The spelling of 1289366 in words is "one million, two hundred eighty-nine thousand, three hundred sixty-six".