43424440 has 16 divisors (see below), whose sum is σ = 97705080. Its totient is φ = 17369760.

The previous prime is 43424417. The next prime is 43424441. The reversal of 43424440 is 4442434.

43424440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43424441) 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 3 ways as a sum of consecutive naturals, for example, 542766 + ... + 542845.

Almost surely, 2^43424440 is an apocalyptic number.

43424440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43424440 is an abundant number, since it is smaller than the sum of its proper divisors (54280640).

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

43424440 is a wasteful number, since it uses less digits than its factorization.

43424440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085622 (or 1085618 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

The square root of 43424440 is about 6589.7223006740. The cubic root of 43424440 is about 351.4887334877.

Adding to 43424440 its reverse (4442434), we get a palindrome (47866874).

The spelling of 43424440 in words is "forty-three million, four hundred twenty-four thousand, four hundred forty".