43985536 has 48 divisors (see below), whose sum is σ = 101948490. Its totient is φ = 18848256.

The previous prime is 43985531. The next prime is 43985537. The reversal of 43985536 is 63558934.

It can be written as a sum of positive squares in only one way, i.e., 30735936 + 13249600 = 5544^2 + 3640^2 .

It is a junction number, because it is equal to n+sod(n) for n = 43985492 and 43985501.

It is not an unprimeable number, because it can be changed into a prime (43985531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2766 + ... + 9778.

Almost surely, 2^43985536 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 43985536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50974245).

43985536 is an abundant number, since it is smaller than the sum of its proper divisors (57962954).

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

43985536 is an equidigital number, since it uses as much as digits as its factorization.

43985536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7041 (or 7022 counting only the distinct ones).

The product of its digits is 388800, while the sum is 43.

The square root of 43985536 is about 6632.1592260741. The cubic root of 43985536 is about 352.9961452337.

It can be divided in two parts, 43985 and 536, that added together give a square (44521 = 211²).

The spelling of 43985536 in words is "forty-three million, nine hundred eighty-five thousand, five hundred thirty-six".