243079943 has 4 divisors (see below), whose sum is σ = 251462040. Its totient is φ = 234697848.

The previous prime is 243079933. The next prime is 243079961. The reversal of 243079943 is 349970342.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 243079943 - 2¹⁴ = 243063559 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243079943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243079913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4191005 + ... + 4191062.

It is an arithmetic number, because the mean of its divisors is an integer number (62865510).

Almost surely, 2^243079943 is an apocalyptic number.

243079943 is a deficient number, since it is larger than the sum of its proper divisors (8382097).

243079943 is an equidigital number, since it uses as much as digits as its factorization.

243079943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8382096.

The product of its (nonzero) digits is 163296, while the sum is 41.

The square root of 243079943 is about 15591.0212301825. The cubic root of 243079943 is about 624.0935707465.

The spelling of 243079943 in words is "two hundred forty-three million, seventy-nine thousand, nine hundred forty-three".