243924049 has 4 divisors (see below), whose sum is σ = 244249600. Its totient is φ = 243598500.

The previous prime is 243924029. The next prime is 243924077. The reversal of 243924049 is 940429342.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 243924049 - 2¹³ = 243915857 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243923999 and 243924017.

It is not an unprimeable number, because it can be changed into a prime (243924029) 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, 161649 + ... + 163150.

It is an arithmetic number, because the mean of its divisors is an integer number (61062400).

Almost surely, 2^243924049 is an apocalyptic number.

It is an amenable number.

243924049 is a deficient number, since it is larger than the sum of its proper divisors (325551).

243924049 is an equidigital number, since it uses as much as digits as its factorization.

243924049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325550.

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 243924049 is about 15618.0680303295. The cubic root of 243924049 is about 624.8151338046.

It can be divided in two parts, 24392 and 4049, that added together give a triangular number (28441 = T₂₃₈).

The spelling of 243924049 in words is "two hundred forty-three million, nine hundred twenty-four thousand, forty-nine".