2223555779 has 2 divisors, whose sum is σ = 2223555780. Its totient is φ = 2223555778.

The previous prime is 2223555739. The next prime is 2223555781. The reversal of 2223555779 is 9775553222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2223555779 - 2¹² = 2223551683 is a prime.

Together with 2223555781, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (2223555709) 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 as a sum of consecutive naturals, namely, 1111777889 + 1111777890.

It is an arithmetic number, because the mean of its divisors is an integer number (1111777890).

Almost surely, 2^2223555779 is an apocalyptic number.

2223555779 is a deficient number, since it is larger than the sum of its proper divisors (1).

2223555779 is an equidigital number, since it uses as much as digits as its factorization.

2223555779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1323000, while the sum is 47.

The square root of 2223555779 is about 47154.5944633182. The cubic root of 2223555779 is about 1305.2168631051.

The spelling of 2223555779 in words is "two billion, two hundred twenty-three million, five hundred fifty-five thousand, seven hundred seventy-nine".