440002004 has 12 divisors (see below), whose sum is σ = 829234644. Its totient is φ = 203077824.

The previous prime is 440001977. The next prime is 440002009. The reversal of 440002004 is 400200044.

It can be written as a sum of positive squares in 2 ways, for example, as 229461904 + 210540100 = 15148^2 + 14510^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 440002004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440002009) 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, 4230737 + ... + 4230840.

It is an arithmetic number, because the mean of its divisors is an integer number (69102887).

Almost surely, 2^440002004 is an apocalyptic number.

It is an amenable number.

440002004 is a deficient number, since it is larger than the sum of its proper divisors (389232640).

440002004 is a wasteful number, since it uses less digits than its factorization.

440002004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8461594 (or 8461592 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 440002004 is about 20976.2247318244. The cubic root of 440002004 is about 760.5916468652.

Adding to 440002004 its reverse (400200044), we get a palindrome (840202048).

The spelling of 440002004 in words is "four hundred forty million, two thousand, four".