43900055909 has 8 divisors (see below), whose sum is σ = 45815883072. Its totient is φ = 41984822880.

The previous prime is 43900055887. The next prime is 43900055923. The reversal of 43900055909 is 90955000934.

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

It is a cyclic number.

It is not a de Polignac number, because 43900055909 - 2¹⁶ = 43899990373 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43900055909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43900055939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5897 + ... + 296369.

It is an arithmetic number, because the mean of its divisors is an integer number (5726985384).

Almost surely, 2^43900055909 is an apocalyptic number.

It is an amenable number.

43900055909 is a deficient number, since it is larger than the sum of its proper divisors (1915827163).

43900055909 is a wasteful number, since it uses less digits than its factorization.

43900055909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297067.

The product of its (nonzero) digits is 218700, while the sum is 44.

The spelling of 43900055909 in words is "forty-three billion, nine hundred million, fifty-five thousand, nine hundred nine".