1289441 has 8 divisors (see below), whose sum is σ = 1334784. Its totient is φ = 1244880.

The previous prime is 1289429. The next prime is 1289447. The reversal of 1289441 is 1449821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1289441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1289447) 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, 6656 + ... + 6846.

It is an arithmetic number, because the mean of its divisors is an integer number (166848).

2^1289441 is an apocalyptic number.

It is an amenable number.

1289441 is a deficient number, since it is larger than the sum of its proper divisors (45343).

1289441 is a wasteful number, since it uses less digits than its factorization.

1289441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391.

The product of its digits is 2304, while the sum is 29.

The square root of 1289441 is about 1135.5355564666. The cubic root of 1289441 is about 108.8429970357.

The spelling of 1289441 in words is "one million, two hundred eighty-nine thousand, four hundred forty-one".