40444002004 has 18 divisors (see below), whose sum is σ = 82332433050. Its totient is φ = 17333143632.

The previous prime is 40444001971. The next prime is 40444002013. The reversal of 40444002004 is 40020044404.

It can be written as a sum of positive squares in only one way, i.e., 23746193604 + 16697808400 = 154098^2 + 129220^2 .

It is a congruent number.

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, 103173279 + ... + 103173670.

Almost surely, 2^40444002004 is an apocalyptic number.

It is an amenable number.

40444002004 is an abundant number, since it is smaller than the sum of its proper divisors (41888431046).

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

40444002004 is a wasteful number, since it uses less digits than its factorization.

40444002004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206346967 (or 206346958 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 40444002004 its reverse (40020044404), we get a palindrome (80464046408).

It can be divided in two parts, 4044400 and 2004, that added together give a palindrome (4046404).

The spelling of 40444002004 in words is "forty billion, four hundred forty-four million, two thousand, four".