8308805440 has 112 divisors (see below), whose sum is σ = 21338346960. Its totient is φ = 3063398400.

The previous prime is 8308805383. The next prime is 8308805443. The reversal of 8308805440 is 445088038.

It can be written as a sum of positive squares in 8 ways, for example, as 4305459456 + 4003345984 = 65616^2 + 63272^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 8308805393 and 8308805402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8308805443) 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, 4612540 + ... + 4614340.

It is an arithmetic number, because the mean of its divisors is an integer number (190520955).

Almost surely, 2^8308805440 is an apocalyptic number.

8308805440 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 8308805440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10669173480).

8308805440 is an abundant number, since it is smaller than the sum of its proper divisors (13029541520).

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

8308805440 is a wasteful number, since it uses less digits than its factorization.

8308805440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2940 (or 2930 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 40.

The square root of 8308805440 is about 91152.6491112573. The cubic root of 8308805440 is about 2025.4095957516.

The spelling of 8308805440 in words is "eight billion, three hundred eight million, eight hundred five thousand, four hundred forty".