39969678 has 16 divisors (see below), whose sum is σ = 91359360. Its totient is φ = 11419896.

The previous prime is 39969641. The next prime is 39969689. The reversal of 39969678 is 87696993.

39969678 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 an unprimeable number.

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, 475788 + ... + 475871.

It is an arithmetic number, because the mean of its divisors is an integer number (5709960).

Almost surely, 2^39969678 is an apocalyptic number.

39969678 is an abundant number, since it is smaller than the sum of its proper divisors (51389682).

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

39969678 is a wasteful number, since it uses less digits than its factorization.

39969678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951671.

The product of its digits is 4408992, while the sum is 57.

The square root of 39969678 is about 6322.1577012915. The cubic root of 39969678 is about 341.9087510057.

The spelling of 39969678 in words is "thirty-nine million, nine hundred sixty-nine thousand, six hundred seventy-eight".