9871219408 has 10 divisors (see below), whose sum is σ = 19125487634. Its totient is φ = 4935609696.

The previous prime is 9871219403. The next prime is 9871219429. The reversal of 9871219408 is 8049121789.

9871219408 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9661317264 + 209902144 = 98292^2 + 14488^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9871219403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308475591 + ... + 308475622.

Almost surely, 2^9871219408 is an apocalyptic number.

It is an amenable number.

9871219408 is a deficient number, since it is larger than the sum of its proper divisors (9254268226).

9871219408 is a wasteful number, since it uses less digits than its factorization.

9871219408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616951221 (or 616951215 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 49.

The square root of 9871219408 is about 99354.0105280104. The cubic root of 9871219408 is about 2145.1463909377.

The spelling of 9871219408 in words is "nine billion, eight hundred seventy-one million, two hundred nineteen thousand, four hundred eight".