3909378 has 16 divisors (see below), whose sum is σ = 8529696. Its totient is φ = 1184640.

The previous prime is 3909361. The next prime is 3909397. The reversal of 3909378 is 8739093.

It is a happy number.

3909378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 29551 + ... + 29682.

It is an arithmetic number, because the mean of its divisors is an integer number (533106).

Almost surely, 2^3909378 is an apocalyptic number.

3909378 is an abundant number, since it is smaller than the sum of its proper divisors (4620318).

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

3909378 is a wasteful number, since it uses less digits than its factorization.

3909378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59249.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 3909378 is about 1977.2147076127. The cubic root of 3909378 is about 157.5321577068.

The spelling of 3909378 in words is "three million, nine hundred nine thousand, three hundred seventy-eight".