3878394 has 32 divisors (see below), whose sum is σ = 8796480. Its totient is φ = 1130112.

The previous prime is 3878389. The next prime is 3878401. The reversal of 3878394 is 4938783.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174 + ... + 2790.

It is an arithmetic number, because the mean of its divisors is an integer number (274890).

Almost surely, 2^3878394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3878394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4398240).

3878394 is an abundant number, since it is smaller than the sum of its proper divisors (4918086).

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

3878394 is a wasteful number, since it uses less digits than its factorization.

3878394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2654.

The product of its digits is 145152, while the sum is 42.

The square root of 3878394 is about 1969.3638566806. The cubic root of 3878394 is about 157.1148766396.

The spelling of 3878394 in words is "three million, eight hundred seventy-eight thousand, three hundred ninety-four".