3879978 has 16 divisors (see below), whose sum is σ = 8216640. Its totient is φ = 1217216.

The previous prime is 3879959. The next prime is 3879979. The reversal of 3879978 is 8799783.

It is a happy number.

3879978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 3879978.

It is not an unprimeable number, because it can be changed into a prime (3879979) by changing a digit.

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, 18918 + ... + 19121.

It is an arithmetic number, because the mean of its divisors is an integer number (513540).

Almost surely, 2^3879978 is an apocalyptic number.

3879978 is an abundant number, since it is smaller than the sum of its proper divisors (4336662).

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

3879978 is a wasteful number, since it uses less digits than its factorization.

3879978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38061.

The product of its digits is 762048, while the sum is 51.

The square root of 3879978 is about 1969.7659759474. The cubic root of 3879978 is about 157.1362631629.

The spelling of 3879978 in words is "three million, eight hundred seventy-nine thousand, nine hundred seventy-eight".