43981416 has 48 divisors (see below), whose sum is σ = 120051360. Its totient is φ = 14545440.

The previous prime is 43981411. The next prime is 43981453. The reversal of 43981416 is 61418934.

43981416 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43981411) 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 11 ways as a sum of consecutive naturals, for example, 7101 + ... + 11763.

It is an arithmetic number, because the mean of its divisors is an integer number (2501070).

Almost surely, 2^43981416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43981416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60025680).

43981416 is an abundant number, since it is smaller than the sum of its proper divisors (76069944).

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

43981416 is a wasteful number, since it uses less digits than its factorization.

43981416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4806 (or 4799 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 43981416 is about 6631.8486110586. The cubic root of 43981416 is about 352.9851235080.

The spelling of 43981416 in words is "forty-three million, nine hundred eighty-one thousand, four hundred sixteen".