9827211447 has 12 divisors (see below), whose sum is σ = 14427564424. Its totient is φ = 6444072720.

The previous prime is 9827211419. The next prime is 9827211461. The reversal of 9827211447 is 7441127289.

9827211447 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9827211447 - 2²⁷ = 9692993719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9827211467) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8949553 + ... + 8950650.

Almost surely, 2^9827211447 is an apocalyptic number.

9827211447 is a deficient number, since it is larger than the sum of its proper divisors (4600352977).

9827211447 is a wasteful number, since it uses less digits than its factorization.

9827211447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17900270 (or 17900267 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 9827211447 is about 99132.2926548156. The cubic root of 9827211447 is about 2141.9538047090.

The spelling of 9827211447 in words is "nine billion, eight hundred twenty-seven million, two hundred eleven thousand, four hundred forty-seven".