39938912 has 96 divisors (see below), whose sum is σ = 92574720. Its totient is φ = 16796160.

The previous prime is 39938911. The next prime is 39938923. The reversal of 39938912 is 21983993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39938911) 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 15 ways as a sum of consecutive naturals, for example, 244943 + ... + 245105.

It is an arithmetic number, because the mean of its divisors is an integer number (964320).

Almost surely, 2^39938912 is an apocalyptic number.

39938912 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39938912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46287360).

39938912 is an abundant number, since it is smaller than the sum of its proper divisors (52635808).

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

39938912 is a wasteful number, since it uses less digits than its factorization.

39938912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236 (or 228 counting only the distinct ones).

The product of its digits is 104976, while the sum is 44.

The square root of 39938912 is about 6319.7240446083. The cubic root of 39938912 is about 341.8210022813.

The spelling of 39938912 in words is "thirty-nine million, nine hundred thirty-eight thousand, nine hundred twelve".