243417249 has 12 divisors (see below), whose sum is σ = 356054400. Its totient is φ = 160223544.

The previous prime is 243417247. The next prime is 243417263. The reversal of 243417249 is 942714342.

It is not a de Polignac number, because 243417249 - 2¹ = 243417247 is a prime.

It is a super-2 number, since 2×243417249² = 118503914221456002, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (243417241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 170469 + ... + 171890.

It is an arithmetic number, because the mean of its divisors is an integer number (29671200).

Almost surely, 2^243417249 is an apocalyptic number.

It is an amenable number.

243417249 is a deficient number, since it is larger than the sum of its proper divisors (112637151).

243417249 is a wasteful number, since it uses less digits than its factorization.

243417249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342444 (or 342441 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 243417249 is about 15601.8347959463. The cubic root of 243417249 is about 624.3821084841.

It can be divided in two parts, 2434 and 17249, that added together give a 9-th power (19683 = 3⁹).

The spelling of 243417249 in words is "two hundred forty-three million, four hundred seventeen thousand, two hundred forty-nine".