43204109 has 8 divisors (see below), whose sum is σ = 46605720. Its totient is φ = 39813696.

The previous prime is 43204099. The next prime is 43204129. The reversal of 43204109 is 90140234.

43204109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 26574025 + 16630084 = 5155^2 + 4078^2 .

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

It is not a de Polignac number, because 43204109 - 2²⁴ = 26426893 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 (43204129) 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, 6347 + ... + 11255.

It is an arithmetic number, because the mean of its divisors is an integer number (5825715).

Almost surely, 2^43204109 is an apocalyptic number.

It is an amenable number.

43204109 is a deficient number, since it is larger than the sum of its proper divisors (3401611).

43204109 is a wasteful number, since it uses less digits than its factorization.

43204109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5599.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 43204109 is about 6572.9832648501. The cubic root of 43204109 is about 350.8932530374.

The spelling of 43204109 in words is "forty-three million, two hundred four thousand, one hundred nine".