39988044 has 18 divisors (see below), whose sum is σ = 101080980. Its totient is φ = 13329336.

The previous prime is 39988043. The next prime is 39988073. The reversal of 39988044 is 44088993.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (39988043) 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, 555354 + ... + 555425.

It is an arithmetic number, because the mean of its divisors is an integer number (5615610).

Almost surely, 2^39988044 is an apocalyptic number.

It is an amenable number.

39988044 is an abundant number, since it is smaller than the sum of its proper divisors (61092936).

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

39988044 is a wasteful number, since it uses less digits than its factorization.

39988044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110789 (or 1110784 counting only the distinct ones).

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

The square root of 39988044 is about 6323.6100449031. The cubic root of 39988044 is about 341.9611118192.

The spelling of 39988044 in words is "thirty-nine million, nine hundred eighty-eight thousand, forty-four".