8421491480 has 16 divisors (see below), whose sum is σ = 18948355920.
Its totient is φ = 3368596576.
The previous prime is 8421491447. The next prime is 8421491489. The reversal of 8421491480 is 841941248.
It is a happy number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (8421491489) 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 3 ways as a sum of consecutive naturals, for example, 105268604 + ... + 105268683.
It is an arithmetic number, because the mean of its divisors is an integer number (1184272245).
Almost surely, 28421491480 is an apocalyptic number.
It is an amenable number.
8421491480 is an abundant number, since it is smaller than the sum of its proper divisors (10526864440).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
8421491480 is a wasteful number, since it uses less digits than its factorization.
8421491480 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 210537298 (or 210537294 counting only the distinct ones).
The product of its (nonzero) digits is 73728, while the sum is 41.
The square root of 8421491480 is about 91768.6846369719.
The cubic root of 8421491480 is about 2034.5248770556.
The spelling of 8421491480 in words is "eight billion, four hundred twenty-one million, four hundred ninety-one thousand, four hundred eighty".