3938358856 has 32 divisors (see below), whose sum is σ = 7822694880. Its totient is φ = 1852422400.

The previous prime is 3938358727. The next prime is 3938358857. The reversal of 3938358856 is 6588538393.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 3938358856.

It is not an unprimeable number, because it can be changed into a prime (3938358857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321891 + ... + 333901.

It is an arithmetic number, because the mean of its divisors is an integer number (244459215).

Almost surely, 2^3938358856 is an apocalyptic number.

It is an amenable number.

3938358856 is a deficient number, since it is larger than the sum of its proper divisors (3884336024).

3938358856 is a wasteful number, since it uses less digits than its factorization.

3938358856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14445 (or 14441 counting only the distinct ones).

The product of its digits is 18662400, while the sum is 58.

The square root of 3938358856 is about 62756.3451453317. The cubic root of 3938358856 is about 1579.2047025667.

The spelling of 3938358856 in words is "three billion, nine hundred thirty-eight million, three hundred fifty-eight thousand, eight hundred fifty-six".