4423827447989 has 2 divisors, whose sum is σ = 4423827447990. Its totient is φ = 4423827447988.

The previous prime is 4423827447937. The next prime is 4423827448003. The reversal of 4423827447989 is 9897447283244.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2989641567364 + 1434185880625 = 1729058^2 + 1197575^2 .

It is a cyclic number.

It is not a de Polignac number, because 4423827447989 - 2¹⁶ = 4423827382453 is a prime.

It is a super-5 number, since 5×4423827447989⁵ (a number of 64 digits) contains 55555 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4423827447289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2211913723994 + 2211913723995.

It is an arithmetic number, because the mean of its divisors is an integer number (2211913723995).

Almost surely, 2^{4423827447989} is an apocalyptic number.

It is an amenable number.

4423827447989 is a deficient number, since it is larger than the sum of its proper divisors (1).

4423827447989 is an equidigital number, since it uses as much as digits as its factorization.

4423827447989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 780337152, while the sum is 71.

The spelling of 4423827447989 in words is "four trillion, four hundred twenty-three billion, eight hundred twenty-seven million, four hundred forty-seven thousand, nine hundred eighty-nine".