9444442001 has 2 divisors, whose sum is σ = 9444442002. Its totient is φ = 9444442000.

The previous prime is 9444441973. The next prime is 9444442019. The reversal of 9444442001 is 1002444449.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6886510225 + 2557931776 = 82985^2 + 50576^2 .

It is an emirp because it is prime and its reverse (1002444449) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9444442001 is a prime.

It is not a weakly prime, because it can be changed into another prime (9444442031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4722221000 + 4722221001.

It is an arithmetic number, because the mean of its divisors is an integer number (4722221001).

Almost surely, 2^9444442001 is an apocalyptic number.

It is an amenable number.

9444442001 is a deficient number, since it is larger than the sum of its proper divisors (1).

9444442001 is an equidigital number, since it uses as much as digits as its factorization.

9444442001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 9444442001 is about 97182.5190093362. The cubic root of 9444442001 is about 2113.7750528380.

The spelling of 9444442001 in words is "nine billion, four hundred forty-four million, four hundred forty-two thousand, one".