8354489680 has 80 divisors (see below), whose sum is σ = 19826856000. Its totient is φ = 3272944640.

The previous prime is 8354489579. The next prime is 8354489711. The reversal of 8354489680 is 869844538.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

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, 1323171 + ... + 1329469.

It is an arithmetic number, because the mean of its divisors is an integer number (247835700).

Almost surely, 2^8354489680 is an apocalyptic number.

8354489680 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8354489680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9913428000).

8354489680 is an abundant number, since it is smaller than the sum of its proper divisors (11472366320).

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

8354489680 is a wasteful number, since it uses less digits than its factorization.

8354489680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6652 (or 6646 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 55.

The square root of 8354489680 is about 91402.8975470690. The cubic root of 8354489680 is about 2029.1149109736.

The spelling of 8354489680 in words is "eight billion, three hundred fifty-four million, four hundred eighty-nine thousand, six hundred eighty".