3921928404 has 24 divisors (see below), whose sum is σ = 9152394048. Its totient is φ = 1307134080.

The previous prime is 3921928399. The next prime is 3921928427. The reversal of 3921928404 is 4048291293.

3921928404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3921928404² = 30763044812203974432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97089 + ... + 131415.

It is an arithmetic number, because the mean of its divisors is an integer number (381349752).

Almost surely, 2^3921928404 is an apocalyptic number.

It is an amenable number.

3921928404 is an abundant number, since it is smaller than the sum of its proper divisors (5230465644).

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

3921928404 is a wasteful number, since it uses less digits than its factorization.

3921928404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43855 (or 43853 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 3921928404 is about 62625.3016280161. The cubic root of 3921928404 is about 1577.0055451060.

The spelling of 3921928404 in words is "three billion, nine hundred twenty-one million, nine hundred twenty-eight thousand, four hundred four".