43040445 has 16 divisors (see below), whose sum is σ = 78702720. Its totient is φ = 19675584.

The previous prime is 43040423. The next prime is 43040449. The reversal of 43040445 is 54404034.

It is not a de Polignac number, because 43040445 - 2¹⁹ = 42516157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43040449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204850 + ... + 205059.

It is an arithmetic number, because the mean of its divisors is an integer number (4918920).

Almost surely, 2^43040445 is an apocalyptic number.

It is an amenable number.

43040445 is a deficient number, since it is larger than the sum of its proper divisors (35662275).

43040445 is a wasteful number, since it uses less digits than its factorization.

43040445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409924.

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 43040445 is about 6560.5217018161. The cubic root of 43040445 is about 350.4496126530.

Adding to 43040445 its reverse (54404034), we get a palindrome (97444479).

The spelling of 43040445 in words is "forty-three million, forty thousand, four hundred forty-five".