1296889 has 4 divisors (see below), whose sum is σ = 1414800. Its totient is φ = 1178980.

The previous prime is 1296877. The next prime is 1296899. The reversal of 1296889 is 9886921.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1296889 - 2¹¹ = 1294841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1296829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58939 + ... + 58960.

It is an arithmetic number, because the mean of its divisors is an integer number (353700).

2^1296889 is an apocalyptic number.

It is an amenable number.

1296889 is a deficient number, since it is larger than the sum of its proper divisors (117911).

1296889 is a wasteful number, since it uses less digits than its factorization.

1296889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117910.

The product of its digits is 62208, while the sum is 43.

The square root of 1296889 is about 1138.8103441750. The cubic root of 1296889 is about 109.0521591961.

The spelling of 1296889 in words is "one million, two hundred ninety-six thousand, eight hundred eighty-nine".