4006044 has 72 divisors (see below), whose sum is σ = 12097680. Its totient is φ = 1143072.

The previous prime is 4006039. The next prime is 4006063. The reversal of 4006044 is 4406004.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4914 + ... + 5670.

Almost surely, 2^4006044 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 4006044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6048840).

4006044 is an abundant number, since it is smaller than the sum of its proper divisors (8091636).

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

4006044 is a wasteful number, since it uses less digits than its factorization.

4006044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784 (or 769 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 4006044 is about 2001.5104296506. The cubic root of 4006044 is about 158.8200170610.

It can be divided in two parts, 40060 and 44, that added together give a palindrome (40104).

The spelling of 4006044 in words is "four million, six thousand, forty-four", and thus it is an eban number.