39668856 has 16 divisors (see below), whose sum is σ = 99172200. Its totient is φ = 13222944.

The previous prime is 39668851. The next prime is 39668869. The reversal of 39668856 is 65886693.

39668856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 39668799 and 39668808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39668851) 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 3 ways as a sum of consecutive naturals, for example, 826411 + ... + 826458.

Almost surely, 2^39668856 is an apocalyptic number.

It is an amenable number.

39668856 is an abundant number, since it is smaller than the sum of its proper divisors (59503344).

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

39668856 is a wasteful number, since it uses less digits than its factorization.

39668856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652878 (or 1652874 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 51.

The square root of 39668856 is about 6298.3216812100. The cubic root of 39668856 is about 341.0488258646.

The spelling of 39668856 in words is "thirty-nine million, six hundred sixty-eight thousand, eight hundred fifty-six".