39478684 has 48 divisors (see below), whose sum is σ = 81607680. Its totient is φ = 16361280.

The previous prime is 39478679. The next prime is 39478711. The reversal of 39478684 is 48687493.

39478684 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 15 ways as a sum of consecutive naturals, for example, 172282 + ... + 172510.

It is an arithmetic number, because the mean of its divisors is an integer number (1700160).

Almost surely, 2^39478684 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 39478684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40803840).

39478684 is an abundant number, since it is smaller than the sum of its proper divisors (42128996).

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

39478684 is a wasteful number, since it uses less digits than its factorization.

39478684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418 (or 416 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 49.

The square root of 39478684 is about 6283.2065062355. The cubic root of 39478684 is about 340.5029580353.

The spelling of 39478684 in words is "thirty-nine million, four hundred seventy-eight thousand, six hundred eighty-four".