9898855155 has 128 divisors (see below), whose sum is σ = 20437401600. Its totient is φ = 4452630912.

The previous prime is 9898855147. The next prime is 9898855159. The reversal of 9898855155 is 5515588989.

It is not a de Polignac number, because 9898855155 - 2³ = 9898855147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 9898855092 and 9898855101.

It is not an unprimeable number, because it can be changed into a prime (9898855159) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 22548426 + ... + 22548864.

It is an arithmetic number, because the mean of its divisors is an integer number (159667200).

Almost surely, 2^9898855155 is an apocalyptic number.

9898855155 is an abundant number, since it is smaller than the sum of its proper divisors (10538546445).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9898855155 is a wasteful number, since it uses less digits than its factorization.

9898855155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790 (or 784 counting only the distinct ones).

The product of its digits is 25920000, while the sum is 63.

The square root of 9898855155 is about 99492.9904817420. The cubic root of 9898855155 is about 2147.1463966505.

The spelling of 9898855155 in words is "nine billion, eight hundred ninety-eight million, eight hundred fifty-five thousand, one hundred fifty-five".