223509249 has 12 divisors (see below), whose sum is σ = 326934400. Its totient is φ = 147119544.

The previous prime is 223509241. The next prime is 223509269. The reversal of 223509249 is 942905322.

It is not a de Polignac number, because 223509249 - 2³ = 223509241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223509241) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 156469 + ... + 157890.

Almost surely, 2^223509249 is an apocalyptic number.

It is an amenable number.

223509249 is a deficient number, since it is larger than the sum of its proper divisors (103425151).

223509249 is a wasteful number, since it uses less digits than its factorization.

223509249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314444 (or 314441 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 223509249 is about 14950.2257173596. The cubic root of 223509249 is about 606.8739554831.

The spelling of 223509249 in words is "two hundred twenty-three million, five hundred nine thousand, two hundred forty-nine".