243677441 has 6 divisors (see below), whose sum is σ = 283461570. Its totient is φ = 208866336.

The previous prime is 243677419. The next prime is 243677471. The reversal of 243677441 is 144776342.

It can be written as a sum of positive squares in only one way, i.e., 243235216 + 442225 = 15596^2 + 665^2 .

It is not a de Polignac number, because 243677441 - 2¹⁰ = 243676417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243677395 and 243677404.

It is not an unprimeable number, because it can be changed into a prime (243677471) 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 5 ways as a sum of consecutive naturals, for example, 2486456 + ... + 2486553.

It is an arithmetic number, because the mean of its divisors is an integer number (47243595).

Almost surely, 2^243677441 is an apocalyptic number.

It is an amenable number.

243677441 is a deficient number, since it is larger than the sum of its proper divisors (39784129).

243677441 is an equidigital number, since it uses as much as digits as its factorization.

243677441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4973023 (or 4973016 counting only the distinct ones).

The product of its digits is 112896, while the sum is 38.

The square root of 243677441 is about 15610.1710752957. The cubic root of 243677441 is about 624.6044994330.

The spelling of 243677441 in words is "two hundred forty-three million, six hundred seventy-seven thousand, four hundred forty-one".