9898987801 has 4 divisors (see below), whose sum is σ = 9940406400. Its totient is φ = 9857569204.

The previous prime is 9898987799. The next prime is 9898987811. The reversal of 9898987801 is 1087898989.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9898987801 - 2¹ = 9898987799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9898987811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20708941 + ... + 20709418.

It is an arithmetic number, because the mean of its divisors is an integer number (2485101600).

Almost surely, 2^9898987801 is an apocalyptic number.

It is an amenable number.

9898987801 is a deficient number, since it is larger than the sum of its proper divisors (41418599).

9898987801 is a wasteful number, since it uses less digits than its factorization.

9898987801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41418598.

The product of its (nonzero) digits is 20901888, while the sum is 67.

The square root of 9898987801 is about 99493.6570892838. The cubic root of 9898987801 is about 2147.1559872919.

The spelling of 9898987801 in words is "nine billion, eight hundred ninety-eight million, nine hundred eighty-seven thousand, eight hundred one".