243389445 has 16 divisors (see below), whose sum is σ = 419379072. Its totient is φ = 119822400.

The previous prime is 243389413. The next prime is 243389467. The reversal of 243389445 is 544983342.

It is not a de Polignac number, because 243389445 - 2⁵ = 243389413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243389397 and 243389406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 623881 + ... + 624270.

It is an arithmetic number, because the mean of its divisors is an integer number (26211192).

Almost surely, 2^243389445 is an apocalyptic number.

It is an amenable number.

243389445 is a deficient number, since it is larger than the sum of its proper divisors (175989627).

243389445 is a wasteful number, since it uses less digits than its factorization.

243389445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248172.

The product of its digits is 414720, while the sum is 42.

The square root of 243389445 is about 15600.9437214548. The cubic root of 243389445 is about 624.3583345168.

The spelling of 243389445 in words is "two hundred forty-three million, three hundred eighty-nine thousand, four hundred forty-five".