3946693856 has 48 divisors (see below), whose sum is σ = 8887003776. Its totient is φ = 1690118016.

The previous prime is 3946693853. The next prime is 3946693873. The reversal of 3946693856 is 6583966493.

It is a junction number, because it is equal to n+sod(n) for n = 3946693795 and 3946693804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3946693853) 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, 313475 + ... + 325821.

It is an arithmetic number, because the mean of its divisors is an integer number (185145912).

Almost surely, 2^3946693856 is an apocalyptic number.

It is an amenable number.

3946693856 is an abundant number, since it is smaller than the sum of its proper divisors (4940309920).

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

3946693856 is a wasteful number, since it uses less digits than its factorization.

3946693856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13791 (or 13783 counting only the distinct ones).

The product of its digits is 25194240, while the sum is 59.

The square root of 3946693856 is about 62822.7176744209. The cubic root of 3946693856 is about 1580.3179747792.

The spelling of 3946693856 in words is "three billion, nine hundred forty-six million, six hundred ninety-three thousand, eight hundred fifty-six".