243963439 has 12 divisors (see below), whose sum is σ = 260171184. Its totient is φ = 228707712.

The previous prime is 243963427. The next prime is 243963443. The reversal of 243963439 is 934369342.

It is not a de Polignac number, because 243963439 - 2¹³ = 243955247 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243963395 and 243963404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243963449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31534 + ... + 38500.

It is an arithmetic number, because the mean of its divisors is an integer number (21680932).

Almost surely, 2^243963439 is an apocalyptic number.

243963439 is a deficient number, since it is larger than the sum of its proper divisors (16207745).

243963439 is an equidigital number, since it uses as much as digits as its factorization.

243963439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7102 (or 7083 counting only the distinct ones).

The product of its digits is 419904, while the sum is 43.

The square root of 243963439 is about 15619.3290188791. The cubic root of 243963439 is about 624.8487646876.

The spelling of 243963439 in words is "two hundred forty-three million, nine hundred sixty-three thousand, four hundred thirty-nine".