223198399 has 2 divisors, whose sum is σ = 223198400. Its totient is φ = 223198398.

The previous prime is 223198397. The next prime is 223198403. The reversal of 223198399 is 993891322.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 223198399 - 2¹ = 223198397 is a prime.

It is a super-3 number, since 3×223198399³ (a number of 26 digits) contains 333 as substring.

Together with 223198397, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223198397) 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, 111599199 + 111599200.

It is an arithmetic number, because the mean of its divisors is an integer number (111599200).

Almost surely, 2^223198399 is an apocalyptic number.

223198399 is a deficient number, since it is larger than the sum of its proper divisors (1).

223198399 is an equidigital number, since it uses as much as digits as its factorization.

223198399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 46.

The square root of 223198399 is about 14939.8259360677. The cubic root of 223198399 is about 606.5924842206.

The spelling of 223198399 in words is "two hundred twenty-three million, one hundred ninety-eight thousand, three hundred ninety-nine".