243480859 has 2 divisors, whose sum is σ = 243480860. Its totient is φ = 243480858.

The previous prime is 243480857. The next prime is 243480869. The reversal of 243480859 is 958084342.

243480859 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 not a de Polignac number, because 243480859 - 2¹ = 243480857 is a prime.

Together with 243480857, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (243480857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121740429 + 121740430.

It is an arithmetic number, because the mean of its divisors is an integer number (121740430).

Almost surely, 2^243480859 is an apocalyptic number.

243480859 is a deficient number, since it is larger than the sum of its proper divisors (1).

243480859 is an equidigital number, since it uses as much as digits as its factorization.

243480859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 276480, while the sum is 43.

The square root of 243480859 is about 15603.8732050732. The cubic root of 243480859 is about 624.4364917662.

The spelling of 243480859 in words is "two hundred forty-three million, four hundred eighty thousand, eight hundred fifty-nine".