8471199840 has 96 divisors (see below), whose sum is σ = 26783156736. Its totient is φ = 2250616320.

The previous prime is 8471199833. The next prime is 8471199857. The reversal of 8471199840 is 489911748.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×8471199840² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97519 + ... + 162641.

It is an arithmetic number, because the mean of its divisors is an integer number (278991216).

Almost surely, 2^8471199840 is an apocalyptic number.

8471199840 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 8471199840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13391578368).

8471199840 is an abundant number, since it is smaller than the sum of its proper divisors (18311956896).

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

8471199840 is a wasteful number, since it uses less digits than its factorization.

8471199840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65412 (or 65404 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 51.

The square root of 8471199840 is about 92039.1212474348. The cubic root of 8471199840 is about 2038.5199953471.

The spelling of 8471199840 in words is "eight billion, four hundred seventy-one million, one hundred ninety-nine thousand, eight hundred forty".