39389856 has 72 divisors (see below), whose sum is σ = 113686272. Its totient is φ = 11932800.

The previous prime is 39389843. The next prime is 39389873. The reversal of 39389856 is 65898393.

It is a junction number, because it is equal to n+sod(n) for n = 39389799 and 39389808.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9921 + ... + 13311.

It is an arithmetic number, because the mean of its divisors is an integer number (1578976).

Almost surely, 2^39389856 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 39389856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56843136).

39389856 is an abundant number, since it is smaller than the sum of its proper divisors (74296416).

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

39389856 is a wasteful number, since it uses less digits than its factorization.

39389856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3426 (or 3407 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 51.

The square root of 39389856 is about 6276.1338417851. The cubic root of 39389856 is about 340.2473862771.

The spelling of 39389856 in words is "thirty-nine million, three hundred eighty-nine thousand, eight hundred fifty-six".