500000040405 has 48 divisors (see below), whose sum is σ = 899327607360. Its totient is φ = 266499911808.

The previous prime is 500000040403. The next prime is 500000040409. The reversal of 500000040405 is 504040000005.

It is a happy number.

It is not a de Polignac number, because 500000040405 - 2¹ = 500000040403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (500000040403) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1827054 + ... + 2082816.

It is an arithmetic number, because the mean of its divisors is an integer number (18735991820).

Almost surely, 2^500000040405 is an apocalyptic number.

It is an amenable number.

500000040405 is a deficient number, since it is larger than the sum of its proper divisors (399327566955).

500000040405 is a wasteful number, since it uses less digits than its factorization.

500000040405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257392 (or 257380 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

It can be divided in two parts, 5000000 and 40405, that added together give a palindrome (5040405).

The spelling of 500000040405 in words is "five hundred billion, forty thousand, four hundred five".