43791643 has 12 divisors (see below), whose sum is σ = 53938872. Its totient is φ = 35327040.

The previous prime is 43791641. The next prime is 43791647. The reversal of 43791643 is 34619734.

43791643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 43791643 - 2¹ = 43791641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43791641) 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 11 ways as a sum of consecutive naturals, for example, 25453 + ... + 27118.

It is an arithmetic number, because the mean of its divisors is an integer number (4494906).

Almost surely, 2^43791643 is an apocalyptic number.

43791643 is a deficient number, since it is larger than the sum of its proper divisors (10147229).

43791643 is a wasteful number, since it uses less digits than its factorization.

43791643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52602 (or 52595 counting only the distinct ones).

The product of its digits is 54432, while the sum is 37.

The square root of 43791643 is about 6617.5254438498. The cubic root of 43791643 is about 352.4766994977.

The spelling of 43791643 in words is "forty-three million, seven hundred ninety-one thousand, six hundred forty-three".