43881066 has 24 divisors (see below), whose sum is σ = 96020964. Its totient is φ = 14481600.

The previous prime is 43881041. The next prime is 43881083. The reversal of 43881066 is 66018834.

It is a happy number.

43881066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 37271025 + 6610041 = 6105^2 + 2571^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 43881066.

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 in 11 ways as a sum of consecutive naturals, for example, 10251 + ... + 13886.

Almost surely, 2^43881066 is an apocalyptic number.

43881066 is an abundant number, since it is smaller than the sum of its proper divisors (52139898).

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

43881066 is a wasteful number, since it uses less digits than its factorization.

43881066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24246 (or 24243 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 43881066 is about 6624.2785267529. The cubic root of 43881066 is about 352.7164567637.

The spelling of 43881066 in words is "forty-three million, eight hundred eighty-one thousand, sixty-six".