3878878 has 4 divisors (see below), whose sum is σ = 5818320. Its totient is φ = 1939438.

The previous prime is 3878867. The next prime is 3878879. The reversal of 3878878 is 8788783.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3878879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 969718 + ... + 969721.

It is an arithmetic number, because the mean of its divisors is an integer number (1454580).

Almost surely, 2^3878878 is an apocalyptic number.

3878878 is a deficient number, since it is larger than the sum of its proper divisors (1939442).

3878878 is a wasteful number, since it uses less digits than its factorization.

3878878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1939441.

The product of its digits is 602112, while the sum is 49.

The square root of 3878878 is about 1969.4867351673. The cubic root of 3878878 is about 157.1214120283.

The spelling of 3878878 in words is "three million, eight hundred seventy-eight thousand, eight hundred seventy-eight".