243003449399 has 2 divisors, whose sum is σ = 243003449400. Its totient is φ = 243003449398.

The previous prime is 243003449371. The next prime is 243003449411. The reversal of 243003449399 is 993944300342.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243003449399 is a prime.

It is a super-2 number, since 2×243003449399² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243003449309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121501724699 + 121501724700.

It is an arithmetic number, because the mean of its divisors is an integer number (121501724700).

Almost surely, 2^243003449399 is an apocalyptic number.

243003449399 is a deficient number, since it is larger than the sum of its proper divisors (1).

243003449399 is an equidigital number, since it uses as much as digits as its factorization.

243003449399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2519424, while the sum is 50.

The spelling of 243003449399 in words is "two hundred forty-three billion, three million, four hundred forty-nine thousand, three hundred ninety-nine".