243454385 has 16 divisors (see below), whose sum is σ = 296991360. Its totient is φ = 191546880.

The previous prime is 243454369. The next prime is 243454397. The reversal of 243454385 is 583454342.

It is not a de Polignac number, because 243454385 - 2⁴ = 243454369 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 238406 + ... + 239424.

It is an arithmetic number, because the mean of its divisors is an integer number (18561960).

Almost surely, 2^243454385 is an apocalyptic number.

It is an amenable number.

243454385 is a deficient number, since it is larger than the sum of its proper divisors (53536975).

243454385 is a wasteful number, since it uses less digits than its factorization.

243454385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1768.

The product of its digits is 230400, while the sum is 38.

The square root of 243454385 is about 15603.0248669929. The cubic root of 243454385 is about 624.4138590072.

The spelling of 243454385 in words is "two hundred forty-three million, four hundred fifty-four thousand, three hundred eighty-five".