9890670899 has 2 divisors, whose sum is σ = 9890670900. Its totient is φ = 9890670898.

The previous prime is 9890670857. The next prime is 9890670917. The reversal of 9890670899 is 9980760989.

9890670899 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 strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9890670899 is a prime.

It is not a weakly prime, because it can be changed into another prime (9890672899) 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, 4945335449 + 4945335450.

It is an arithmetic number, because the mean of its divisors is an integer number (4945335450).

Almost surely, 2^9890670899 is an apocalyptic number.

9890670899 is a deficient number, since it is larger than the sum of its proper divisors (1).

9890670899 is an equidigital number, since it uses as much as digits as its factorization.

9890670899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17635968, while the sum is 65.

The square root of 9890670899 is about 99451.8521647536. The cubic root of 9890670899 is about 2146.5544884375.

The spelling of 9890670899 in words is "nine billion, eight hundred ninety million, six hundred seventy thousand, eight hundred ninety-nine".