243085499 has 4 divisors (see below), whose sum is σ = 257384664. Its totient is φ = 228786336.

The previous prime is 243085483. The next prime is 243085519. The reversal of 243085499 is 994580342.

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

It is a cyclic number.

It is not a de Polignac number, because 243085499 - 2⁴ = 243085483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243085429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7149557 + ... + 7149590.

It is an arithmetic number, because the mean of its divisors is an integer number (64346166).

Almost surely, 2^243085499 is an apocalyptic number.

243085499 is a deficient number, since it is larger than the sum of its proper divisors (14299165).

243085499 is a wasteful number, since it uses less digits than its factorization.

243085499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14299164.

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 243085499 is about 15591.1994086408. The cubic root of 243085499 is about 624.0983256122.

The spelling of 243085499 in words is "two hundred forty-three million, eighty-five thousand, four hundred ninety-nine".