4406036221 has 4 divisors (see below), whose sum is σ = 4449660444. Its totient is φ = 4362412000.

The previous prime is 4406036203. The next prime is 4406036233. The reversal of 4406036221 is 1226306044.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3227830596 + 1178205625 = 56814^2 + 34325^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4406036221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4406036221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4406036321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21811960 + ... + 21812161.

It is an arithmetic number, because the mean of its divisors is an integer number (1112415111).

Almost surely, 2^4406036221 is an apocalyptic number.

It is an amenable number.

4406036221 is a deficient number, since it is larger than the sum of its proper divisors (43624223).

4406036221 is a wasteful number, since it uses less digits than its factorization.

4406036221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43624222.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 4406036221 is about 66377.9799406400. The cubic root of 4406036221 is about 1639.3915327784.

The spelling of 4406036221 in words is "four billion, four hundred six million, thirty-six thousand, two hundred twenty-one".