405480439340 has 24 divisors (see below), whose sum is σ = 851598144432. Its totient is φ = 162175181120.

The previous prime is 405480439327. The next prime is 405480439349. The reversal of 405480439340 is 43934084504.

It is a junction number, because it is equal to n+sod(n) for n = 405480439291 and 405480439300.

It is not an unprimeable number, because it can be changed into a prime (405480439349) 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 7 ways as a sum of consecutive naturals, for example, 865631 + ... + 1249110.

It is an arithmetic number, because the mean of its divisors is an integer number (35483256018).

Almost surely, 2^405480439340 is an apocalyptic number.

It is an amenable number.

405480439340 is an abundant number, since it is smaller than the sum of its proper divisors (446117705092).

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

405480439340 is a wasteful number, since it uses less digits than its factorization.

405480439340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2124337 (or 2124335 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 44.

The spelling of 405480439340 in words is "four hundred five billion, four hundred eighty million, four hundred thirty-nine thousand, three hundred forty".