8421498900 has 108 divisors (see below), whose sum is σ = 26415121824. Its totient is φ = 2244168000.

The previous prime is 8421498863. The next prime is 8421498901. The reversal of 8421498900 is 98941248.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8421498901) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1915705 + ... + 1920095.

Almost surely, 2^8421498900 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 8421498900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13207560912).

8421498900 is an abundant number, since it is smaller than the sum of its proper divisors (17993622924).

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

8421498900 is a wasteful number, since it uses less digits than its factorization.

8421498900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6542 (or 6532 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 8421498900 is about 91768.7250646973. The cubic root of 8421498900 is about 2034.5254745812.

The spelling of 8421498900 in words is "eight billion, four hundred twenty-one million, four hundred ninety-eight thousand, nine hundred".