9899005001 has 2 divisors, whose sum is σ = 9899005002. Its totient is φ = 9899005000.

The previous prime is 9899004961. The next prime is 9899005003. The reversal of 9899005001 is 1005009989.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7468416400 + 2430588601 = 86420^2 + 49301^2 .

It is an emirp because it is prime and its reverse (1005009989) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9899005001 is a prime.

Together with 9899005003, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9899005001.

It is not a weakly prime, because it can be changed into another prime (9899005003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4949502500 + 4949502501.

It is an arithmetic number, because the mean of its divisors is an integer number (4949502501).

Almost surely, 2^9899005001 is an apocalyptic number.

It is an amenable number.

9899005001 is a deficient number, since it is larger than the sum of its proper divisors (1).

9899005001 is an equidigital number, since it uses as much as digits as its factorization.

9899005001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 41.

The square root of 9899005001 is about 99493.7435269173. The cubic root of 9899005001 is about 2147.1572308891.

The spelling of 9899005001 in words is "nine billion, eight hundred ninety-nine million, five thousand, one".