3867444 has 72 divisors (see below), whose sum is σ = 11356800. Its totient is φ = 1086912.

The previous prime is 3867443. The next prime is 3867481. The reversal of 3867444 is 4447683.

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 = 3867399 and 3867408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3867443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25882 + ... + 26030.

Almost surely, 2^3867444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3867444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5678400).

3867444 is an abundant number, since it is smaller than the sum of its proper divisors (7489356).

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

3867444 is a wasteful number, since it uses less digits than its factorization.

3867444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269 (or 264 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 3867444 is about 1966.5818060788. The cubic root of 3867444 is about 156.9668746969.

The spelling of 3867444 in words is "three million, eight hundred sixty-seven thousand, four hundred forty-four".