39944000 has 56 divisors (see below), whose sum is σ = 98941128. Its totient is φ = 15974400.

The previous prime is 39943997. The next prime is 39944017. The reversal of 39944000 is 44993.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3268864 + 36675136 = 1808^2 + 6056^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5504 + ... + 10496.

Almost surely, 2^39944000 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 39944000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49470564).

39944000 is an abundant number, since it is smaller than the sum of its proper divisors (58997128).

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

39944000 is an equidigital number, since it uses as much as digits as its factorization.

39944000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5020 (or 5000 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 39944000 is about 6320.1265810109. The cubic root of 39944000 is about 341.8355170434.

Adding to 39944000 its reverse (44993), we get a palindrome (39988993).

The spelling of 39944000 in words is "thirty-nine million, nine hundred forty-four thousand".