222806399 has 2 divisors, whose sum is σ = 222806400. Its totient is φ = 222806398.

The previous prime is 222806327. The next prime is 222806411. The reversal of 222806399 is 993608222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 222806399 - 2¹⁶ = 222740863 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222806599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111403199 + 111403200.

It is an arithmetic number, because the mean of its divisors is an integer number (111403200).

Almost surely, 2^222806399 is an apocalyptic number.

222806399 is a deficient number, since it is larger than the sum of its proper divisors (1).

222806399 is an equidigital number, since it uses as much as digits as its factorization.

222806399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 222806399 is about 14926.7008746072. The cubic root of 222806399 is about 606.2371596955.

The spelling of 222806399 in words is "two hundred twenty-two million, eight hundred six thousand, three hundred ninety-nine".