43404109 has 8 divisors (see below), whose sum is σ = 49676288. Its totient is φ = 37149840.

The previous prime is 43404079. The next prime is 43404131. The reversal of 43404109 is 90140434.

It is a happy number.

43404109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 43404109 - 2⁹ = 43403597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43404209) 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 7 ways as a sum of consecutive naturals, for example, 1204 + ... + 9394.

It is an arithmetic number, because the mean of its divisors is an integer number (6209536).

Almost surely, 2^43404109 is an apocalyptic number.

It is an amenable number.

43404109 is a deficient number, since it is larger than the sum of its proper divisors (6272179).

43404109 is an equidigital number, since it uses as much as digits as its factorization.

43404109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8955.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 43404109 is about 6588.1794905725. The cubic root of 43404109 is about 351.4338701205.

The spelling of 43404109 in words is "forty-three million, four hundred four thousand, one hundred nine".