1228449 has 4 divisors (see below), whose sum is σ = 1637936. Its totient is φ = 818964.

The previous prime is 1228441. The next prime is 1228457. The reversal of 1228449 is 9448221.

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 an interprime number because it is at equal distance from previous prime (1228441) and next prime (1228457).

It is not a de Polignac number, because 1228449 - 2³ = 1228441 is a prime.

It is a D-number.

It is a Duffinian number.

1228449 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1228441) 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 3 ways as a sum of consecutive naturals, for example, 204739 + ... + 204744.

It is an arithmetic number, because the mean of its divisors is an integer number (409484).

2^1228449 is an apocalyptic number.

It is an amenable number.

1228449 is a deficient number, since it is larger than the sum of its proper divisors (409487).

1228449 is an equidigital number, since it uses as much as digits as its factorization.

1228449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409486.

The product of its digits is 4608, while the sum is 30.

The square root of 1228449 is about 1108.3541852675. The cubic root of 1228449 is about 107.0990726494.

The spelling of 1228449 in words is "one million, two hundred twenty-eight thousand, four hundred forty-nine".