1284449 has 4 divisors (see below), whose sum is σ = 1289364. Its totient is φ = 1279536.

The previous prime is 1284443. The next prime is 1284467. The reversal of 1284449 is 9444821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9444821 = 43 ⋅219647.

It can be written as a sum of positive squares in 2 ways, for example, as 270400 + 1014049 = 520^2 + 1007^2 .

It is a cyclic number.

It is not a de Polignac number, because 1284449 - 2⁴ = 1284433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1284443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2042 + ... + 2595.

It is an arithmetic number, because the mean of its divisors is an integer number (322341).

2^1284449 is an apocalyptic number.

It is an amenable number.

1284449 is a deficient number, since it is larger than the sum of its proper divisors (4915).

1284449 is an equidigital number, since it uses as much as digits as its factorization.

1284449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4914.

The product of its digits is 9216, while the sum is 32.

The square root of 1284449 is about 1133.3353431355. The cubic root of 1284449 is about 108.7023554892.

The spelling of 1284449 in words is "one million, two hundred eighty-four thousand, four hundred forty-nine".