39988328 has 8 divisors (see below), whose sum is σ = 74978130. Its totient is φ = 19994160.

The previous prime is 39988307. The next prime is 39988337. The reversal of 39988328 is 82388993.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 35736484 + 4251844 = 5978^2 + 2062^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2499263 + ... + 2499278.

Almost surely, 2^39988328 is an apocalyptic number.

It is an amenable number.

39988328 is a deficient number, since it is larger than the sum of its proper divisors (34989802).

39988328 is a wasteful number, since it uses less digits than its factorization.

39988328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4998547 (or 4998543 counting only the distinct ones).

The product of its digits is 746496, while the sum is 50.

The square root of 39988328 is about 6323.6325003909. The cubic root of 39988328 is about 341.9619213672.

The spelling of 39988328 in words is "thirty-nine million, nine hundred eighty-eight thousand, three hundred twenty-eight".