39688456368 has 160 divisors (see below), whose sum is σ = 114285185280. Its totient is φ = 11767726080.

The previous prime is 39688456349. The next prime is 39688456387. The reversal of 39688456368 is 86365488693.

It is a happy number.

39688456368 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (39688456349) and next prime (39688456387).

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a junction number, because it is equal to n+sod(n) for n = 39688456299 and 39688456308.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4553871 + ... + 4562577.

It is an arithmetic number, because the mean of its divisors is an integer number (714282408).

Almost surely, 2^39688456368 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 39688456368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57142592640).

39688456368 is an abundant number, since it is smaller than the sum of its proper divisors (74596728912).

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

39688456368 is a wasteful number, since it uses less digits than its factorization.

39688456368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8915 (or 8909 counting only the distinct ones).

The product of its digits is 179159040, while the sum is 66.

The spelling of 39688456368 in words is "thirty-nine billion, six hundred eighty-eight million, four hundred fifty-six thousand, three hundred sixty-eight".