4004020044440 has 64 divisors (see below), whose sum is σ = 9703757568960. Its totient is φ = 1478146982400.

The previous prime is 4004020044419. The next prime is 4004020044461. The reversal of 4004020044440 is 444400204004.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4004020044419) and next prime (4004020044461).

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2289197 + ... + 3639843.

It is an arithmetic number, because the mean of its divisors is an integer number (151621212015).

Almost surely, 2^{4004020044440} is an apocalyptic number.

4004020044440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4004020044440 is an abundant number, since it is smaller than the sum of its proper divisors (5699737524520).

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

4004020044440 is a wasteful number, since it uses less digits than its factorization.

4004020044440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356372 (or 1356368 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 4004020044440 its reverse (444400204004), we get a palindrome (4448420248444).

The spelling of 4004020044440 in words is "four trillion, four billion, twenty million, forty-four thousand, four hundred forty".