4442020109 has 2 divisors, whose sum is σ = 4442020110. Its totient is φ = 4442020108.

The previous prime is 4442020043. The next prime is 4442020111. The reversal of 4442020109 is 9010202444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3066722884 + 1375297225 = 55378^2 + 37085^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4442020109 is a prime.

Together with 4442020111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4442020129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2221010054 + 2221010055.

It is an arithmetic number, because the mean of its divisors is an integer number (2221010055).

Almost surely, 2^4442020109 is an apocalyptic number.

It is an amenable number.

4442020109 is a deficient number, since it is larger than the sum of its proper divisors (1).

4442020109 is an equidigital number, since it uses as much as digits as its factorization.

4442020109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 4442020109 is about 66648.4816706277. The cubic root of 4442020109 is about 1643.8423822473.

The spelling of 4442020109 in words is "four billion, four hundred forty-two million, twenty thousand, one hundred nine".