1289497 has 6 divisors (see below), whose sum is σ = 1417514. Its totient is φ = 1172160.

The previous prime is 1289459. The next prime is 1289513. The reversal of 1289497 is 7949821.

It can be written as a sum of positive squares in only one way, i.e., 793881 + 495616 = 891^2 + 704^2 .

It is not a de Polignac number, because 1289497 - 2¹⁵ = 1256729 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 5 ways as a sum of consecutive naturals, for example, 5208 + ... + 5449.

2^1289497 is an apocalyptic number.

It is an amenable number.

1289497 is a deficient number, since it is larger than the sum of its proper divisors (128017).

1289497 is a wasteful number, since it uses less digits than its factorization.

1289497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10679 (or 10668 counting only the distinct ones).

The product of its digits is 36288, while the sum is 40.

The square root of 1289497 is about 1135.5602141674. The cubic root of 1289497 is about 108.8445726848.

The spelling of 1289497 in words is "one million, two hundred eighty-nine thousand, four hundred ninety-seven".