223209664249 has 24 divisors (see below), whose sum is σ = 264808240200. Its totient is φ = 186891048960.

The previous prime is 223209664241. The next prime is 223209664259. The reversal of 223209664249 is 942466902322.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3778315024 + 219431349225 = 61468^2 + 468435^2 .

It is not a de Polignac number, because 223209664249 - 2³ = 223209664241 is a prime.

It is a super-3 number, since 3×223209664249³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223209664241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 548259 + ... + 864295.

It is an arithmetic number, because the mean of its divisors is an integer number (11033676675).

Almost surely, 2^223209664249 is an apocalyptic number.

It is an amenable number.

223209664249 is a deficient number, since it is larger than the sum of its proper divisors (41598575951).

223209664249 is a wasteful number, since it uses less digits than its factorization.

223209664249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316521 (or 316510 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 49.

The spelling of 223209664249 in words is "two hundred twenty-three billion, two hundred nine million, six hundred sixty-four thousand, two hundred forty-nine".