3978479828 has 12 divisors (see below), whose sum is σ = 6975655680. Its totient is φ = 1985435352.

The previous prime is 3978479819. The next prime is 3978479831. The reversal of 3978479828 is 8289748793.

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, 948788 + ... + 952971.

It is an arithmetic number, because the mean of its divisors is an integer number (581304640).

Almost surely, 2^3978479828 is an apocalyptic number.

It is an amenable number.

3978479828 is a deficient number, since it is larger than the sum of its proper divisors (2997175852).

3978479828 is a wasteful number, since it uses less digits than its factorization.

3978479828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1902286 (or 1902284 counting only the distinct ones).

The product of its digits is 48771072, while the sum is 65.

The square root of 3978479828 is about 63075.1918586063. The cubic root of 3978479828 is about 1584.5491694476.

The spelling of 3978479828 in words is "three billion, nine hundred seventy-eight million, four hundred seventy-nine thousand, eight hundred twenty-eight".