808400480440 has 64 divisors (see below), whose sum is σ = 2087369760960. Its totient is φ = 276015790080.

The previous prime is 808400480401. The next prime is 808400480441. The reversal of 808400480440 is 44084004808.

It is a super-2 number, since 2×808400480440² (a number of 25 digits) contains 22 as substring.

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 = 808400480393 and 808400480402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (808400480441) 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, 5922447 + ... + 6057406.

It is an arithmetic number, because the mean of its divisors is an integer number (32615152515).

Almost surely, 2^808400480440 is an apocalyptic number.

It is an amenable number.

808400480440 is an abundant number, since it is smaller than the sum of its proper divisors (1278969280520).

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

808400480440 is a wasteful number, since it uses less digits than its factorization.

808400480440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11980112 (or 11980108 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 40.

The spelling of 808400480440 in words is "eight hundred eight billion, four hundred million, four hundred eighty thousand, four hundred forty".