1223444 has 6 divisors (see below), whose sum is σ = 2141034. Its totient is φ = 611720.

The previous prime is 1223437. The next prime is 1223447. The reversal of 1223444 is 4443221.

It can be written as a sum of positive squares in only one way, i.e., 1188100 + 35344 = 1090^2 + 188^2 .

It is a super-2 number, since 2×1223444² = 2993630442272, which contains 22 as substring.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152927 + ... + 152934.

It is an arithmetic number, because the mean of its divisors is an integer number (356839).

2^1223444 is an apocalyptic number.

It is an amenable number.

1223444 is a deficient number, since it is larger than the sum of its proper divisors (917590).

1223444 is a wasteful number, since it uses less digits than its factorization.

1223444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305865 (or 305863 counting only the distinct ones).

The product of its digits is 768, while the sum is 20.

The square root of 1223444 is about 1106.0940285527. The cubic root of 1223444 is about 106.9534254459.

Adding to 1223444 its reverse (4443221), we get a palindrome (5666665).

The spelling of 1223444 in words is "one million, two hundred twenty-three thousand, four hundred forty-four".