43840049 has 16 divisors (see below), whose sum is σ = 51425280. Its totient is φ = 36945360.

The previous prime is 43840037. The next prime is 43840057. The reversal of 43840049 is 94004834.

43840049 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 43840049 - 2⁴ = 43840033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43839997 and 43840024.

It is not an unprimeable number, because it can be changed into a prime (43840549) 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, 7592 + ... + 12054.

It is an arithmetic number, because the mean of its divisors is an integer number (3214080).

Almost surely, 2^43840049 is an apocalyptic number.

It is an amenable number.

43840049 is a deficient number, since it is larger than the sum of its proper divisors (7585231).

43840049 is a wasteful number, since it uses less digits than its factorization.

43840049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4540.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 43840049 is about 6621.1818431455. The cubic root of 43840049 is about 352.6065241491.

The spelling of 43840049 in words is "forty-three million, eight hundred forty thousand, forty-nine".