222439999 has 2 divisors, whose sum is σ = 222440000. Its totient is φ = 222439998.

The previous prime is 222439991. The next prime is 222440003. The reversal of 222439999 is 999934222.

222439999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 222439999 - 2³ = 222439991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222439991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111219999 + 111220000.

It is an arithmetic number, because the mean of its divisors is an integer number (111220000).

Almost surely, 2^222439999 is an apocalyptic number.

222439999 is a deficient number, since it is larger than the sum of its proper divisors (1).

222439999 is an equidigital number, since it uses as much as digits as its factorization.

222439999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 629856, while the sum is 49.

The square root of 222439999 is about 14914.4225164771. The cubic root of 222439999 is about 605.9046630113.

The spelling of 222439999 in words is "two hundred twenty-two million, four hundred thirty-nine thousand, nine hundred ninety-nine".