9876534209 has 8 divisors (see below), whose sum is σ = 10191548928. Its totient is φ = 9564050160.

The previous prime is 9876534169. The next prime is 9876534211. The reversal of 9876534209 is 9024356789.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9876534209 - 2¹⁶ = 9876468673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9876534289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 624737 + ... + 640350.

It is an arithmetic number, because the mean of its divisors is an integer number (1273943616).

Almost surely, 2^9876534209 is an apocalyptic number.

It is an amenable number.

9876534209 is a deficient number, since it is larger than the sum of its proper divisors (315014719).

9876534209 is a wasteful number, since it uses less digits than its factorization.

9876534209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265335.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The square root of 9876534209 is about 99380.7537151938. The cubic root of 9876534209 is about 2145.5313140213.

The spelling of 9876534209 in words is "nine billion, eight hundred seventy-six million, five hundred thirty-four thousand, two hundred nine".