43989152 has 48 divisors (see below), whose sum is σ = 90751752. Its totient is φ = 20966400.

The previous prime is 43989151. The next prime is 43989157. The reversal of 43989152 is 25198934.

It can be written as a sum of positive squares in 4 ways, for example, as 42981136 + 1008016 = 6556^2 + 1004^2 .

It is not an unprimeable number, because it can be changed into a prime (43989151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62402 + ... + 63102.

Almost surely, 2^43989152 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 43989152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45375876).

43989152 is an abundant number, since it is smaller than the sum of its proper divisors (46762600).

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

43989152 is a wasteful number, since it uses less digits than its factorization.

43989152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801 (or 793 counting only the distinct ones).

The product of its digits is 77760, while the sum is 41.

The square root of 43989152 is about 6632.4318315381. The cubic root of 43989152 is about 353.0058181034.

The spelling of 43989152 in words is "forty-three million, nine hundred eighty-nine thousand, one hundred fifty-two".