43138868 has 12 divisors (see below), whose sum is σ = 75795552. Its totient is φ = 21483000.

The previous prime is 43138867. The next prime is 43138871. The reversal of 43138868 is 86883134.

It is a happy number.

43138868 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 (43138861) 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 3 ways as a sum of consecutive naturals, for example, 20480 + ... + 22487.

It is an arithmetic number, because the mean of its divisors is an integer number (6316296).

Almost surely, 2^43138868 is an apocalyptic number.

It is an amenable number.

43138868 is a deficient number, since it is larger than the sum of its proper divisors (32656684).

43138868 is a wasteful number, since it uses less digits than its factorization.

43138868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43222 (or 43220 counting only the distinct ones).

The product of its digits is 110592, while the sum is 41.

The square root of 43138868 is about 6568.0185748824. The cubic root of 43138868 is about 350.7165402197.

The spelling of 43138868 in words is "forty-three million, one hundred thirty-eight thousand, eight hundred sixty-eight".