223355779 has 2 divisors, whose sum is σ = 223355780. Its totient is φ = 223355778.

The previous prime is 223355753. The next prime is 223355801. The reversal of 223355779 is 977553322.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 223355779 - 2⁵ = 223355747 is a prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (223355729) 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, 111677889 + 111677890.

It is an arithmetic number, because the mean of its divisors is an integer number (111677890).

Almost surely, 2^223355779 is an apocalyptic number.

223355779 is a deficient number, since it is larger than the sum of its proper divisors (1).

223355779 is an equidigital number, since it uses as much as digits as its factorization.

223355779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 396900, while the sum is 43.

The square root of 223355779 is about 14945.0921375547. The cubic root of 223355779 is about 606.7350227221.

The spelling of 223355779 in words is "two hundred twenty-three million, three hundred fifty-five thousand, seven hundred seventy-nine".