4044001 has 6 divisors (see below), whose sum is σ = 4379190. Its totient is φ = 3732768.

The previous prime is 4043999. The next prime is 4044013. The reversal of 4044001 is 1004404.

It is a happy number.

4044001 is nontrivially palindromic in base 12.

It can be written as a sum of positive squares in 3 ways, for example, as 40000 + 4004001 = 200^2 + 2001^2 .

It is not a de Polignac number, because 4044001 - 2¹ = 4043999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

4044001 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4044031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11796 + ... + 12133.

It is an arithmetic number, because the mean of its divisors is an integer number (729865).

Almost surely, 2^4044001 is an apocalyptic number.

It is an amenable number.

4044001 is a deficient number, since it is larger than the sum of its proper divisors (335189).

4044001 is a wasteful number, since it uses less digits than its factorization.

4044001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23955 (or 23942 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 4044001 is about 2010.9701638761. The cubic root of 4044001 is about 159.3200441562.

Adding to 4044001 its reverse (1004404), we get a palindrome (5048405).

The spelling of 4044001 in words is "four million, forty-four thousand, one".