223099985 has 4 divisors (see below), whose sum is σ = 267719988. Its totient is φ = 178479984.

The previous prime is 223099969. The next prime is 223099991. The reversal of 223099985 is 589990322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 589990322 = 2 ⋅294995161.

It can be written as a sum of positive squares in 2 ways, for example, as 44182609 + 178917376 = 6647^2 + 13376^2 .

It is a cyclic number.

It is not a de Polignac number, because 223099985 - 2⁴ = 223099969 is a prime.

It is a super-3 number, since 3×223099985³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22309994 + ... + 22310003.

It is an arithmetic number, because the mean of its divisors is an integer number (66929997).

Almost surely, 2^223099985 is an apocalyptic number.

It is an amenable number.

223099985 is a deficient number, since it is larger than the sum of its proper divisors (44620003).

223099985 is an equidigital number, since it uses as much as digits as its factorization.

223099985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44620002.

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 223099985 is about 14936.5318933145. The cubic root of 223099985 is about 606.5033169608.

The spelling of 223099985 in words is "two hundred twenty-three million, ninety-nine thousand, nine hundred eighty-five".