39808944 has 120 divisors (see below), whose sum is σ = 129308192. Its totient is φ = 11197440.

The previous prime is 39808931. The next prime is 39808949. The reversal of 39808944 is 44980893.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 39808944.

It is not an unprimeable number, because it can be changed into a prime (39808949) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73314 + ... + 73854.

Almost surely, 2^39808944 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 39808944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64654096).

39808944 is an abundant number, since it is smaller than the sum of its proper divisors (89499248).

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

39808944 is a wasteful number, since it uses less digits than its factorization.

39808944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635 (or 626 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 39808944 is about 6309.4329380698. The cubic root of 39808944 is about 341.4498181671.

The spelling of 39808944 in words is "thirty-nine million, eight hundred eight thousand, nine hundred forty-four".