4400875821 has 16 divisors (see below), whose sum is σ = 6125506560. Its totient is φ = 2805187440.

The previous prime is 4400875783. The next prime is 4400875837. The reversal of 4400875821 is 1285780044.

It is a happy number.

It is not a de Polignac number, because 4400875821 - 2⁶ = 4400875757 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4400875821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4400875021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172360 + ... + 196238.

It is an arithmetic number, because the mean of its divisors is an integer number (382844160).

Almost surely, 2^4400875821 is an apocalyptic number.

It is an amenable number.

4400875821 is a deficient number, since it is larger than the sum of its proper divisors (1724630739).

4400875821 is a wasteful number, since it uses less digits than its factorization.

4400875821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26576.

The product of its (nonzero) digits is 71680, while the sum is 39.

The square root of 4400875821 is about 66339.0972278038. The cubic root of 4400875821 is about 1638.7512580450.

The spelling of 4400875821 in words is "four billion, four hundred million, eight hundred seventy-five thousand, eight hundred twenty-one".