9999998850 has 96 divisors (see below), whose sum is σ = 25007149440. Its totient is φ = 2644503040.

The previous prime is 9999998837. The next prime is 9999998861. The reversal of 9999998850 is 588999999.

It is a Harshad number since it is a multiple of its sum of digits (75).

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12546652 + ... + 12547448.

It is an arithmetic number, because the mean of its divisors is an integer number (260491140).

Almost surely, 2^9999998850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9999998850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12503574720).

9999998850 is an abundant number, since it is smaller than the sum of its proper divisors (15007150590).

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

9999998850 is a wasteful number, since it uses less digits than its factorization.

9999998850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1404 (or 1399 counting only the distinct ones).

The product of its (nonzero) digits is 170061120, while the sum is 75.

The square root of 9999998850 is about 99999.9942499998. The cubic root of 9999998850 is about 2154.4346074452.

The spelling of 9999998850 in words is "nine billion, nine hundred ninety-nine million, nine hundred ninety-eight thousand, eight hundred fifty".