43985166 has 16 divisors (see below), whose sum is σ = 88176000. Its totient is φ = 14627448.

The previous prime is 43985159. The next prime is 43985167. The reversal of 43985166 is 66158934.

43985166 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 not an unprimeable number, because it can be changed into a prime (43985167) 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 7 ways as a sum of consecutive naturals, for example, 5716 + ... + 10983.

It is an arithmetic number, because the mean of its divisors is an integer number (5511000).

Almost surely, 2^43985166 is an apocalyptic number.

43985166 is an abundant number, since it is smaller than the sum of its proper divisors (44190834).

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

43985166 is a wasteful number, since it uses less digits than its factorization.

43985166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17143.

The product of its digits is 155520, while the sum is 42.

The square root of 43985166 is about 6632.1313316309. The cubic root of 43985166 is about 352.9951554466.

The spelling of 43985166 in words is "forty-three million, nine hundred eighty-five thousand, one hundred sixty-six".