3871944 has 24 divisors (see below), whose sum is σ = 10486710. Its totient is φ = 1290624.

The previous prime is 3871921. The next prime is 3871961. The reversal of 3871944 is 4491783.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3849444 + 22500 = 1962^2 + 150^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 3871899 and 3871908.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26817 + ... + 26960.

Almost surely, 2^3871944 is an apocalyptic number.

It is an amenable number.

3871944 is an abundant number, since it is smaller than the sum of its proper divisors (6614766).

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

3871944 is a wasteful number, since it uses less digits than its factorization.

3871944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53789 (or 53782 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 3871944 is about 1967.7255906249. The cubic root of 3871944 is about 157.0277311828.

The spelling of 3871944 in words is "three million, eight hundred seventy-one thousand, nine hundred forty-four".