9876954917 has 2 divisors, whose sum is σ = 9876954918. Its totient is φ = 9876954916.

The previous prime is 9876954887. The next prime is 9876954991. The reversal of 9876954917 is 7194596789.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8013651361 + 1863303556 = 89519^2 + 43166^2 .

It is an emirp because it is prime and its reverse (7194596789) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9876954917 - 2³⁰ = 8803213093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9876950917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4938477458 + 4938477459.

It is an arithmetic number, because the mean of its divisors is an integer number (4938477459).

Almost surely, 2^9876954917 is an apocalyptic number.

It is an amenable number.

9876954917 is a deficient number, since it is larger than the sum of its proper divisors (1).

9876954917 is an equidigital number, since it uses as much as digits as its factorization.

9876954917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34292160, while the sum is 65.

The square root of 9876954917 is about 99382.8703399132. The cubic root of 9876954917 is about 2145.5617777903.

The spelling of 9876954917 in words is "nine billion, eight hundred seventy-six million, nine hundred fifty-four thousand, nine hundred seventeen".