43488643 has 4 divisors (see below), whose sum is σ = 47442168. Its totient is φ = 39535120.

The previous prime is 43488619. The next prime is 43488647. The reversal of 43488643 is 34688434.

It is a happy number.

43488643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43488643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43488596 and 43488605.

It is not an unprimeable number, because it can be changed into a prime (43488647) 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 3 ways as a sum of consecutive naturals, for example, 1976746 + ... + 1976767.

It is an arithmetic number, because the mean of its divisors is an integer number (11860542).

Almost surely, 2^43488643 is an apocalyptic number.

43488643 is a deficient number, since it is larger than the sum of its proper divisors (3953525).

43488643 is a wasteful number, since it uses less digits than its factorization.

43488643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3953524.

The product of its digits is 221184, while the sum is 40.

The square root of 43488643 is about 6594.5919509853. The cubic root of 43488643 is about 351.6618734575.

The spelling of 43488643 in words is "forty-three million, four hundred eighty-eight thousand, six hundred forty-three".