4243440202249 has 2 divisors, whose sum is σ = 4243440202250. Its totient is φ = 4243440202248.

The previous prime is 4243440202237. The next prime is 4243440202307. The reversal of 4243440202249 is 9422020443424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3740820174400 + 502620027849 = 1934120^2 + 708957^2 .

It is a cyclic number.

It is not a de Polignac number, because 4243440202249 - 2¹¹ = 4243440200201 is a prime.

It is not a weakly prime, because it can be changed into another prime (4243440202349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2121720101124 + 2121720101125.

It is an arithmetic number, because the mean of its divisors is an integer number (2121720101125).

Almost surely, 2^{4243440202249} is an apocalyptic number.

It is an amenable number.

4243440202249 is a deficient number, since it is larger than the sum of its proper divisors (1).

4243440202249 is an equidigital number, since it uses as much as digits as its factorization.

4243440202249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 442368, while the sum is 40.

The spelling of 4243440202249 in words is "four trillion, two hundred forty-three billion, four hundred forty million, two hundred two thousand, two hundred forty-nine".