243448039 has 2 divisors, whose sum is σ = 243448040. Its totient is φ = 243448038.

The previous prime is 243448033. The next prime is 243448057. The reversal of 243448039 is 930844342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243448039 - 2⁹ = 243447527 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243447989 and 243448007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243448033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121724019 + 121724020.

It is an arithmetic number, because the mean of its divisors is an integer number (121724020).

Almost surely, 2^243448039 is an apocalyptic number.

243448039 is a deficient number, since it is larger than the sum of its proper divisors (1).

243448039 is an equidigital number, since it uses as much as digits as its factorization.

243448039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 37.

The square root of 243448039 is about 15602.8215076633. The cubic root of 243448039 is about 624.4084335352.

The spelling of 243448039 in words is "two hundred forty-three million, four hundred forty-eight thousand, thirty-nine".