1223923579 has 2 divisors, whose sum is σ = 1223923580. Its totient is φ = 1223923578.

The previous prime is 1223923573. The next prime is 1223923583. The reversal of 1223923579 is 9753293221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1223923579 - 2⁷ = 1223923451 is a prime.

It is not a weakly prime, because it can be changed into another prime (1223923573) 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 as a sum of consecutive naturals, namely, 611961789 + 611961790.

It is an arithmetic number, because the mean of its divisors is an integer number (611961790).

Almost surely, 2^1223923579 is an apocalyptic number.

1223923579 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223923579 is an equidigital number, since it uses as much as digits as its factorization.

1223923579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 204120, while the sum is 43.

The square root of 1223923579 is about 34984.6191775757. The cubic root of 1223923579 is about 1069.6739854596.

The spelling of 1223923579 in words is "one billion, two hundred twenty-three million, nine hundred twenty-three thousand, five hundred seventy-nine".