3878444 has 12 divisors (see below), whose sum is σ = 7082544. Its totient is φ = 1854864.

The previous prime is 3878423. The next prime is 3878447. The reversal of 3878444 is 4448783.

It is a super-2 number, since 2×3878444² = 30084655722272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3878398 and 3878407.

It is not an unprimeable number, because it can be changed into a prime (3878447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20987 + ... + 21170.

It is an arithmetic number, because the mean of its divisors is an integer number (590212).

Almost surely, 2^3878444 is an apocalyptic number.

It is an amenable number.

3878444 is a deficient number, since it is larger than the sum of its proper divisors (3204100).

3878444 is a wasteful number, since it uses less digits than its factorization.

3878444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42184 (or 42182 counting only the distinct ones).

The product of its digits is 86016, while the sum is 38.

The square root of 3878444 is about 1969.3765510943. The cubic root of 3878444 is about 157.1155518082.

The spelling of 3878444 in words is "three million, eight hundred seventy-eight thousand, four hundred forty-four".