3978338 has 16 divisors (see below), whose sum is σ = 7344960. Its totient is φ = 1573776.

The previous prime is 3978329. The next prime is 3978349. The reversal of 3978338 is 8338793.

3978338 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 3978295 and 3978304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10748 + ... + 11111.

It is an arithmetic number, because the mean of its divisors is an integer number (459060).

Almost surely, 2^3978338 is an apocalyptic number.

3978338 is a deficient number, since it is larger than the sum of its proper divisors (3366622).

3978338 is a wasteful number, since it uses less digits than its factorization.

3978338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21881.

The product of its digits is 108864, while the sum is 41.

The square root of 3978338 is about 1994.5771481695. The cubic root of 3978338 is about 158.4530340136.

The spelling of 3978338 in words is "three million, nine hundred seventy-eight thousand, three hundred thirty-eight".