43684445 has 16 divisors (see below), whose sum is σ = 60021120. Its totient is φ = 29899584.

The previous prime is 43684427. The next prime is 43684447. The reversal of 43684445 is 54448634.

43684445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 43684445 - 2⁸ = 43684189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43684399 and 43684408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43684447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29339 + ... + 30791.

It is an arithmetic number, because the mean of its divisors is an integer number (3751320).

Almost surely, 2^43684445 is an apocalyptic number.

It is an amenable number.

43684445 is a deficient number, since it is larger than the sum of its proper divisors (16336675).

43684445 is a wasteful number, since it uses less digits than its factorization.

43684445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2324.

The product of its digits is 184320, while the sum is 38.

The square root of 43684445 is about 6609.4209277364. The cubic root of 43684445 is about 352.1888540863.

The spelling of 43684445 in words is "forty-three million, six hundred eighty-four thousand, four hundred forty-five".