1289461 has 4 divisors (see below), whose sum is σ = 1293292. Its totient is φ = 1285632.

The previous prime is 1289459. The next prime is 1289513. The reversal of 1289461 is 1649821.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1649821 = 911 ⋅1811.

It can be written as a sum of positive squares in 2 ways, for example, as 269361 + 1020100 = 519^2 + 1010^2 .

It is a cyclic number.

It is not a de Polignac number, because 1289461 - 2¹ = 1289459 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1289401) 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, 1356 + ... + 2101.

It is an arithmetic number, because the mean of its divisors is an integer number (323323).

2^1289461 is an apocalyptic number.

It is an amenable number.

1289461 is a deficient number, since it is larger than the sum of its proper divisors (3831).

1289461 is an equidigital number, since it uses as much as digits as its factorization.

1289461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3830.

The product of its digits is 3456, while the sum is 31.

The square root of 1289461 is about 1135.5443628498. The cubic root of 1289461 is about 108.8435597727.

The spelling of 1289461 in words is "one million, two hundred eighty-nine thousand, four hundred sixty-one".