39960844 has 48 divisors (see below), whose sum is σ = 90994176. Its totient is φ = 14889600.

The previous prime is 39960841. The next prime is 39960881. The reversal of 39960844 is 44806993.

It is a self number, because there is not a number n which added to its sum of digits gives 39960844.

It is not an unprimeable number, because it can be changed into a prime (39960841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4264 + ... + 9904.

It is an arithmetic number, because the mean of its divisors is an integer number (1895712).

Almost surely, 2^39960844 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 39960844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45497088).

39960844 is an abundant number, since it is smaller than the sum of its proper divisors (51033332).

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

39960844 is a wasteful number, since it uses less digits than its factorization.

39960844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5686 (or 5684 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 39960844 is about 6321.4590088049. The cubic root of 39960844 is about 341.8835598724.

It can be divided in two parts, 39960 and 844, that added together give a palindrome (40804).

The spelling of 39960844 in words is "thirty-nine million, nine hundred sixty thousand, eight hundred forty-four".