243384444 has 36 divisors (see below), whose sum is σ = 651412944. Its totient is φ = 76355712.

The previous prime is 243384439. The next prime is 243384457. The reversal of 243384444 is 444483342.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 243384399 and 243384408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 198232 + ... + 199455.

It is an arithmetic number, because the mean of its divisors is an integer number (18094804).

Almost surely, 2^243384444 is an apocalyptic number.

It is an amenable number.

243384444 is an abundant number, since it is smaller than the sum of its proper divisors (408028500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243384444 is a wasteful number, since it uses less digits than its factorization.

243384444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397714 (or 397709 counting only the distinct ones).

The product of its digits is 147456, while the sum is 36.

The square root of 243384444 is about 15600.7834418660. The cubic root of 243384444 is about 624.3540581913.

It can be divided in two parts, 24338 and 4444, that added together give a palindrome (28782).

The spelling of 243384444 in words is "two hundred forty-three million, three hundred eighty-four thousand, four hundred forty-four".