243309466 has 4 divisors (see below), whose sum is σ = 364964202. Its totient is φ = 121654732.

The previous prime is 243309463. The next prime is 243309613. The reversal of 243309466 is 664903342.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 198218241 + 45091225 = 14079^2 + 6715^2 .

It is not an unprimeable number, because it can be changed into a prime (243309463) by changing a digit.

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 as a sum of consecutive naturals, namely, 60827365 + ... + 60827368.

Almost surely, 2^243309466 is an apocalyptic number.

243309466 is a deficient number, since it is larger than the sum of its proper divisors (121654736).

243309466 is a wasteful number, since it uses less digits than its factorization.

243309466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121654735.

The product of its (nonzero) digits is 93312, while the sum is 37.

The square root of 243309466 is about 15598.3802364220. The cubic root of 243309466 is about 624.2899379245.

The spelling of 243309466 in words is "two hundred forty-three million, three hundred nine thousand, four hundred sixty-six".