1244005223 has 2 divisors, whose sum is σ = 1244005224. Its totient is φ = 1244005222.

The previous prime is 1244005207. The next prime is 1244005261. The reversal of 1244005223 is 3225004421.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1244005223 - 2⁴ = 1244005207 is a prime.

It is a super-3 number, since 3×1244005223³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1244005283) 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 as a sum of consecutive naturals, namely, 622002611 + 622002612.

It is an arithmetic number, because the mean of its divisors is an integer number (622002612).

Almost surely, 2^1244005223 is an apocalyptic number.

1244005223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244005223 is an equidigital number, since it uses as much as digits as its factorization.

1244005223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 1244005223 is about 35270.4582193087. The cubic root of 1244005223 is about 1075.4925373767.

Adding to 1244005223 its reverse (3225004421), we get a palindrome (4469009644).

The spelling of 1244005223 in words is "one billion, two hundred forty-four million, five thousand, two hundred twenty-three".