43974144 has 80 divisors (see below), whose sum is σ = 130207440. Its totient is φ = 14653440.

The previous prime is 43974109. The next prime is 43974169. The reversal of 43974144 is 44147934.

43974144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 43974099 and 43974108.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 12234 + ... + 15414.

It is an arithmetic number, because the mean of its divisors is an integer number (1627593).

Almost surely, 2^43974144 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 43974144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65103720).

43974144 is an abundant number, since it is smaller than the sum of its proper divisors (86233296).

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

43974144 is an equidigital number, since it uses as much as digits as its factorization.

43974144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3208 (or 3186 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 43974144 is about 6631.3003249740. The cubic root of 43974144 is about 352.9656679475.

The spelling of 43974144 in words is "forty-three million, nine hundred seventy-four thousand, one hundred forty-four".