43987216 has 40 divisors (see below), whose sum is σ = 104896064. Its totient is φ = 17400960.

The previous prime is 43987213. The next prime is 43987231. The reversal of 43987216 is 61278934.

It is not an unprimeable number, because it can be changed into a prime (43987213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13650 + ... + 16561.

Almost surely, 2^43987216 is an apocalyptic number.

It is an amenable number.

43987216 is an abundant number, since it is smaller than the sum of its proper divisors (60908848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43987216 is a wasteful number, since it uses less digits than its factorization.

43987216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30239 (or 30233 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 43987216 is about 6632.2858804488. The cubic root of 43987216 is about 353.0006393320. Note that the first 3 decimals are identical.

The spelling of 43987216 in words is "forty-three million, nine hundred eighty-seven thousand, two hundred sixteen".