243393445 has 8 divisors (see below), whose sum is σ = 293237280. Its totient is φ = 193938000.

The previous prime is 243393443. The next prime is 243393457. The reversal of 243393445 is 544393342.

243393445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 243393445 - 2¹ = 243393443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243393443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95715 + ... + 98224.

It is an arithmetic number, because the mean of its divisors is an integer number (36654660).

Almost surely, 2^243393445 is an apocalyptic number.

It is an amenable number.

243393445 is a deficient number, since it is larger than the sum of its proper divisors (49843835).

243393445 is a wasteful number, since it uses less digits than its factorization.

243393445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194195.

The product of its digits is 155520, while the sum is 37.

The square root of 243393445 is about 15601.0719183010. The cubic root of 243393445 is about 624.3617548509.

The spelling of 243393445 in words is "two hundred forty-three million, three hundred ninety-three thousand, four hundred forty-five".