243987463 has 2 divisors, whose sum is σ = 243987464. Its totient is φ = 243987462.

The previous prime is 243987449. The next prime is 243987511. The reversal of 243987463 is 364789342.

243987463 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243987463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243987563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121993731 + 121993732.

It is an arithmetic number, because the mean of its divisors is an integer number (121993732).

Almost surely, 2^243987463 is an apocalyptic number.

243987463 is a deficient number, since it is larger than the sum of its proper divisors (1).

243987463 is an equidigital number, since it uses as much as digits as its factorization.

243987463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 46.

The square root of 243987463 is about 15620.0980470674. The cubic root of 243987463 is about 624.8692744192.

The spelling of 243987463 in words is "two hundred forty-three million, nine hundred eighty-seven thousand, four hundred sixty-three".