4400050640 has 20 divisors (see below), whose sum is σ = 10230117924. Its totient is φ = 1760020224.

The previous prime is 4400050621. The next prime is 4400050643. The reversal of 4400050640 is 460500044.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1013276224 + 3386774416 = 31832^2 + 58196^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4400050643) 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 3 ways as a sum of consecutive naturals, for example, 27500237 + ... + 27500396.

Almost surely, 2^4400050640 is an apocalyptic number.

4400050640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4400050640 is an abundant number, since it is smaller than the sum of its proper divisors (5830067284).

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

4400050640 is a wasteful number, since it uses less digits than its factorization.

4400050640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55000646 (or 55000640 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 4400050640 is about 66332.8775193719. The cubic root of 4400050640 is about 1638.6488276058.

Adding to 4400050640 its reverse (460500044), we get a palindrome (4860550684).

The spelling of 4400050640 in words is "four billion, four hundred million, fifty thousand, six hundred forty".