43971916 has 12 divisors (see below), whose sum is σ = 77632632. Its totient is φ = 21791168.

The previous prime is 43971901. The next prime is 43971923. The reversal of 43971916 is 61917934.

It is a super-2 number, since 2×43971916² = 3867058793422112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48190 + ... + 49093.

It is an arithmetic number, because the mean of its divisors is an integer number (6469386).

Almost surely, 2^43971916 is an apocalyptic number.

It is an amenable number.

43971916 is a deficient number, since it is larger than the sum of its proper divisors (33660716).

43971916 is a wasteful number, since it uses less digits than its factorization.

43971916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97400 (or 97398 counting only the distinct ones).

The product of its digits is 40824, while the sum is 40.

The square root of 43971916 is about 6631.1323316610. The cubic root of 43971916 is about 352.9597067112.

The spelling of 43971916 in words is "forty-three million, nine hundred seventy-one thousand, nine hundred sixteen".