39988216 has 32 divisors (see below), whose sum is σ = 82134000. Its totient is φ = 18167296.

The previous prime is 39988181. The next prime is 39988219. The reversal of 39988216 is 61288993.

39988216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39988219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1126 + ... + 9013.

Almost surely, 2^39988216 is an apocalyptic number.

It is an amenable number.

39988216 is an abundant number, since it is smaller than the sum of its proper divisors (42145784).

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

39988216 is a wasteful number, since it uses less digits than its factorization.

39988216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10191 (or 10187 counting only the distinct ones).

The product of its digits is 186624, while the sum is 46.

The square root of 39988216 is about 6323.6236447151. The cubic root of 39988216 is about 341.9616021093.

It can be divided in two parts, 39988 and 216, that added together give a palindrome (40204).

The spelling of 39988216 in words is "thirty-nine million, nine hundred eighty-eight thousand, two hundred sixteen".