243485039 has 4 divisors (see below), whose sum is σ = 278268624. Its totient is φ = 208701456.

The previous prime is 243485029. The next prime is 243485041. The reversal of 243485039 is 930584342.

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 243485039 - 2²⁰ = 242436463 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243484993 and 243485011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243485029) 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, 17391782 + ... + 17391795.

It is an arithmetic number, because the mean of its divisors is an integer number (69567156).

Almost surely, 2^243485039 is an apocalyptic number.

243485039 is a deficient number, since it is larger than the sum of its proper divisors (34783585).

243485039 is an equidigital number, since it uses as much as digits as its factorization.

243485039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34783584.

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 243485039 is about 15604.0071456021. The cubic root of 243485039 is about 624.4400651198.

The spelling of 243485039 in words is "two hundred forty-three million, four hundred eighty-five thousand, thirty-nine".