1224405679 has 6 divisors (see below), whose sum is σ = 1424308704. Its totient is φ = 1049490540.

The previous prime is 1224405661. The next prime is 1224405709. The reversal of 1224405679 is 9765044221.

It is not a de Polignac number, because 1224405679 - 2⁵ = 1224405647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224405659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12493887 + ... + 12493984.

It is an arithmetic number, because the mean of its divisors is an integer number (237384784).

Almost surely, 2^1224405679 is an apocalyptic number.

1224405679 is a deficient number, since it is larger than the sum of its proper divisors (199903025).

1224405679 is an equidigital number, since it uses as much as digits as its factorization.

1224405679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24987885 (or 24987878 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 1224405679 is about 34991.5086699616. The cubic root of 1224405679 is about 1069.8144141984.

It can be divided in two parts, 122 and 4405679, that added together give a square (4405801 = 2099²).

The spelling of 1224405679 in words is "one billion, two hundred twenty-four million, four hundred five thousand, six hundred seventy-nine".