43868947 has 4 divisors (see below), whose sum is σ = 43911280. Its totient is φ = 43826616.

The previous prime is 43868941. The next prime is 43868977. The reversal of 43868947 is 74986834.

43868947 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 not a de Polignac number, because 43868947 - 2¹⁹ = 43344659 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 43868947.

It is not an unprimeable number, because it can be changed into a prime (43868941) 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, 19572 + ... + 21697.

It is an arithmetic number, because the mean of its divisors is an integer number (10977820).

Almost surely, 2^43868947 is an apocalyptic number.

43868947 is a deficient number, since it is larger than the sum of its proper divisors (42333).

43868947 is a wasteful number, since it uses less digits than its factorization.

43868947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42332.

The product of its digits is 1161216, while the sum is 49.

The square root of 43868947 is about 6623.3637224601. The cubic root of 43868947 is about 352.6839828921.

The spelling of 43868947 in words is "forty-three million, eight hundred sixty-eight thousand, nine hundred forty-seven".