403384906540 has 192 divisors, whose sum is σ = 1095035977728. Its totient is φ = 121135276800.

The previous prime is 403384906433. The next prime is 403384906543. The reversal of 403384906540 is 45609483304.

It is not an unprimeable number, because it can be changed into a prime (403384906543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10818369 + ... + 10855591.

It is an arithmetic number, because the mean of its divisors is an integer number (5703312384).

Almost surely, 2^403384906540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 403384906540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (547517988864).

403384906540 is an abundant number, since it is smaller than the sum of its proper divisors (691651071188).

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

403384906540 is a wasteful number, since it uses less digits than its factorization.

403384906540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37508 (or 37506 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 46.

The spelling of 403384906540 in words is "four hundred three billion, three hundred eighty-four million, nine hundred six thousand, five hundred forty".