223009999 has 4 divisors (see below), whose sum is σ = 223199064. Its totient is φ = 222820936.

The previous prime is 223009987. The next prime is 223010017. The reversal of 223009999 is 999900322.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 223009999 - 2¹¹ = 223007951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223009949) 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 in 3 ways as a sum of consecutive naturals, for example, 92752 + ... + 95125.

It is an arithmetic number, because the mean of its divisors is an integer number (55799766).

Almost surely, 2^223009999 is an apocalyptic number.

223009999 is a deficient number, since it is larger than the sum of its proper divisors (189065).

223009999 is a wasteful number, since it uses less digits than its factorization.

223009999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189064.

The product of its (nonzero) digits is 78732, while the sum is 43.

The square root of 223009999 is about 14933.5193105979. The cubic root of 223009999 is about 606.4217628737.

The spelling of 223009999 in words is "two hundred twenty-three million, nine thousand, nine hundred ninety-nine".