4420990221 has 4 divisors (see below), whose sum is σ = 5894653632. Its totient is φ = 2947326812.

The previous prime is 4420990219. The next prime is 4420990237. The reversal of 4420990221 is 1220990244.

4420990221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4420990221 - 2¹ = 4420990219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4420990201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 736831701 + ... + 736831706.

It is an arithmetic number, because the mean of its divisors is an integer number (1473663408).

Almost surely, 2^4420990221 is an apocalyptic number.

It is an amenable number.

4420990221 is a deficient number, since it is larger than the sum of its proper divisors (1473663411).

4420990221 is a wasteful number, since it uses less digits than its factorization.

4420990221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1473663410.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 4420990221 is about 66490.5273027670. The cubic root of 4420990221 is about 1641.2441259735.

The spelling of 4420990221 in words is "four billion, four hundred twenty million, nine hundred ninety thousand, two hundred twenty-one".