3978422848 has 14 divisors (see below), whose sum is σ = 7894682966. Its totient is φ = 1989211392.

The previous prime is 3978422843. The next prime is 3978422869. The reversal of 3978422848 is 8482248793.

It can be written as a sum of positive squares in only one way, i.e., 3351020544 + 627402304 = 57888^2 + 25048^2 .

It is a super-3 number, since 3×3978422848³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (3978422843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31081365 + ... + 31081492.

Almost surely, 2^3978422848 is an apocalyptic number.

It is an amenable number.

3978422848 is a deficient number, since it is larger than the sum of its proper divisors (3916260118).

3978422848 is an equidigital number, since it uses as much as digits as its factorization.

3978422848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62162869 (or 62162859 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 55.

The square root of 3978422848 is about 63074.7401738604. The cubic root of 3978422848 is about 1584.5416047456.

The spelling of 3978422848 in words is "three billion, nine hundred seventy-eight million, four hundred twenty-two thousand, eight hundred forty-eight".