243457793 has 8 divisors (see below), whose sum is σ = 247798080. Its totient is φ = 239142960.

The previous prime is 243457789. The next prime is 243457801. The reversal of 243457793 is 397754342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243457793 - 2² = 243457789 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243457723) 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 7 ways as a sum of consecutive naturals, for example, 13478 + ... + 25856.

It is an arithmetic number, because the mean of its divisors is an integer number (30974760).

Almost surely, 2^243457793 is an apocalyptic number.

It is an amenable number.

243457793 is a deficient number, since it is larger than the sum of its proper divisors (4340287).

243457793 is a wasteful number, since it uses less digits than its factorization.

243457793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12727.

The product of its digits is 635040, while the sum is 44.

The square root of 243457793 is about 15603.1340762040. The cubic root of 243457793 is about 624.4167726159.

The spelling of 243457793 in words is "two hundred forty-three million, four hundred fifty-seven thousand, seven hundred ninety-three".