4400020404 has 36 divisors (see below), whose sum is σ = 11977834596. Its totient is φ = 1353852288.

The previous prime is 4400020381. The next prime is 4400020477. The reversal of 4400020404 is 4040200044.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 812250000 + 3587770404 = 28500^2 + 59898^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 4700409 + ... + 4701344.

Almost surely, 2^4400020404 is an apocalyptic number.

It is an amenable number.

4400020404 is an abundant number, since it is smaller than the sum of its proper divisors (7577814192).

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

4400020404 is a wasteful number, since it uses less digits than its factorization.

4400020404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9401776 (or 9401771 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 4400020404 is about 66332.6496078666. The cubic root of 4400020404 is about 1638.6450741415.

Adding to 4400020404 its reverse (4040200044), we get a palindrome (8440220448).

The spelling of 4400020404 in words is "four billion, four hundred million, twenty thousand, four hundred four".