243244445 has 8 divisors (see below), whose sum is σ = 301309440. Its totient is φ = 188318160.

The previous prime is 243244427. The next prime is 243244447. The reversal of 243244445 is 544442342.

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

It is a de Polignac number, because none of the positive numbers 2^k-243244445 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243244447) 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, 784505 + ... + 784814.

It is an arithmetic number, because the mean of its divisors is an integer number (37663680).

Almost surely, 2^243244445 is an apocalyptic number.

It is an amenable number.

243244445 is a deficient number, since it is larger than the sum of its proper divisors (58064995).

243244445 is a wasteful number, since it uses less digits than its factorization.

243244445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1569355.

The product of its digits is 61440, while the sum is 32.

The square root of 243244445 is about 15596.2958743414. The cubic root of 243244445 is about 624.2343220961.

Adding to 243244445 its reverse (544442342), we get a palindrome (787686787).

The spelling of 243244445 in words is "two hundred forty-three million, two hundred forty-four thousand, four hundred forty-five".