43947872 has 12 divisors (see below), whose sum is σ = 86522436. Its totient is φ = 21973920.

The previous prime is 43947829. The next prime is 43947923. The reversal of 43947872 is 27874934.

43947872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 686654 + ... + 686717.

It is an arithmetic number, because the mean of its divisors is an integer number (7210203).

Almost surely, 2^43947872 is an apocalyptic number.

It is an amenable number.

43947872 is a deficient number, since it is larger than the sum of its proper divisors (42574564).

43947872 is a wasteful number, since it uses less digits than its factorization.

43947872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373381 (or 1373373 counting only the distinct ones).

The product of its digits is 338688, while the sum is 44.

The square root of 43947872 is about 6629.3191203924. The cubic root of 43947872 is about 352.8953617743.

The spelling of 43947872 in words is "forty-three million, nine hundred forty-seven thousand, eight hundred seventy-two".