8398556500 has 48 divisors (see below), whose sum is σ = 18438690816. Its totient is φ = 3341796000.

The previous prime is 8398556483. The next prime is 8398556501. The reversal of 8398556500 is 56558938.

It is a happy number.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8398556501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51529 + ... + 139471.

It is an arithmetic number, because the mean of its divisors is an integer number (384139392).

Almost surely, 2^8398556500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8398556500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9219345408).

8398556500 is an abundant number, since it is smaller than the sum of its proper divisors (10040134316).

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

8398556500 is a wasteful number, since it uses less digits than its factorization.

8398556500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88153 (or 88141 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 49.

The square root of 8398556500 is about 91643.6386226562. The cubic root of 8398556500 is about 2032.6762650431.

The spelling of 8398556500 in words is "eight billion, three hundred ninety-eight million, five hundred fifty-six thousand, five hundred".