243943941 has 8 divisors (see below), whose sum is σ = 330590944. Its totient is φ = 159963120.

The previous prime is 243943919. The next prime is 243943979. The reversal of 243943941 is 149349342.

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

It is not a de Polignac number, because 243943941 - 2¹⁰ = 243942917 is a prime.

It is a super-2 number, since 2×243943941² = 119017292701222962, which contains 22 as substring.

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 243943941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243943741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 666331 + ... + 666696.

It is an arithmetic number, because the mean of its divisors is an integer number (41323868).

Almost surely, 2^243943941 is an apocalyptic number.

It is an amenable number.

243943941 is a deficient number, since it is larger than the sum of its proper divisors (86647003).

243943941 is a wasteful number, since it uses less digits than its factorization.

243943941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333091.

The product of its digits is 93312, while the sum is 39.

The square root of 243943941 is about 15618.7048438723. The cubic root of 243943941 is about 624.8321178957.

The spelling of 243943941 in words is "two hundred forty-three million, nine hundred forty-three thousand, nine hundred forty-one".