3878946 has 12 divisors (see below), whose sum is σ = 8404422. Its totient is φ = 1292976.

The previous prime is 3878923. The next prime is 3878947. The reversal of 3878946 is 6498783.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3381921 + 497025 = 1839^2 + 705^2 .

It is not an unprimeable number, because it can be changed into a prime (3878947) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 107731 + ... + 107766.

Almost surely, 2^3878946 is an apocalyptic number.

3878946 is an abundant number, since it is smaller than the sum of its proper divisors (4525476).

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

3878946 is a wasteful number, since it uses less digits than its factorization.

3878946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215505 (or 215502 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 3878946 is about 1969.5039984727. The cubic root of 3878946 is about 157.1223301798.

The spelling of 3878946 in words is "three million, eight hundred seventy-eight thousand, nine hundred forty-six".