9891677099 has 4 divisors (see below), whose sum is σ = 9892703136. Its totient is φ = 9890651064.

The previous prime is 9891677093. The next prime is 9891677143. The reversal of 9891677099 is 9907761989.

9891677099 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9907761989 = 1279 ⋅7746491.

It is a cyclic number.

It is not a de Polignac number, because 9891677099 - 2⁴ = 9891677083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9891677093) 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 in 3 ways as a sum of consecutive naturals, for example, 498419 + ... + 517884.

It is an arithmetic number, because the mean of its divisors is an integer number (2473175784).

Almost surely, 2^9891677099 is an apocalyptic number.

9891677099 is a deficient number, since it is larger than the sum of its proper divisors (1026037).

9891677099 is a wasteful number, since it uses less digits than its factorization.

9891677099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026036.

The product of its (nonzero) digits is 15431472, while the sum is 65.

The square root of 9891677099 is about 99456.9107654164. The cubic root of 9891677099 is about 2146.6272772270.

The spelling of 9891677099 in words is "nine billion, eight hundred ninety-one million, six hundred seventy-seven thousand, ninety-nine".