43984164 has 144 divisors (see below), whose sum is σ = 130744320. Its totient is φ = 11430720.

The previous prime is 43984159. The next prime is 43984177. The reversal of 43984164 is 46148934.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 346269 + ... + 346395.

Almost surely, 2^43984164 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 43984164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65372160).

43984164 is an abundant number, since it is smaller than the sum of its proper divisors (86760156).

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

43984164 is a wasteful number, since it uses less digits than its factorization.

43984164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 189 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 43984164 is about 6632.0557898739. The cubic root of 43984164 is about 352.9924749685.

The spelling of 43984164 in words is "forty-three million, nine hundred eighty-four thousand, one hundred sixty-four".