3978362427 has 16 divisors (see below), whose sum is σ = 5769085728. Its totient is φ = 2423980800.

The previous prime is 3978362407. The next prime is 3978362441. The reversal of 3978362427 is 7242638793.

It is not a de Polignac number, because 3978362427 - 2²⁷ = 3844144699 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3978362427.

It is not an unprimeable number, because it can be changed into a prime (3978362407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 501058 + ... + 508935.

It is an arithmetic number, because the mean of its divisors is an integer number (360567858).

Almost surely, 2^3978362427 is an apocalyptic number.

3978362427 is a deficient number, since it is larger than the sum of its proper divisors (1790723301).

3978362427 is a wasteful number, since it uses less digits than its factorization.

3978362427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010110.

The product of its digits is 3048192, while the sum is 51.

The square root of 3978362427 is about 63074.2612085152. The cubic root of 3978362427 is about 1584.5335831353.

The spelling of 3978362427 in words is "three billion, nine hundred seventy-eight million, three hundred sixty-two thousand, four hundred twenty-seven".