3921684448 has 24 divisors (see below), whose sum is σ = 8422709400. Its totient is φ = 1782583680.

The previous prime is 3921684421. The next prime is 3921684479. The reversal of 3921684448 is 8444861293.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5570223 + ... + 5570926.

It is an arithmetic number, because the mean of its divisors is an integer number (350946225).

Almost surely, 2^3921684448 is an apocalyptic number.

It is an amenable number.

3921684448 is an abundant number, since it is smaller than the sum of its proper divisors (4501024952).

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

3921684448 is a wasteful number, since it uses less digits than its factorization.

3921684448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11141170 (or 11141162 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 49.

The square root of 3921684448 is about 62623.3538546124. The cubic root of 3921684448 is about 1576.9728462308.

The spelling of 3921684448 in words is "three billion, nine hundred twenty-one million, six hundred eighty-four thousand, four hundred forty-eight".