40009000505 has 8 divisors (see below), whose sum is σ = 48014577600. Its totient is φ = 32004682416.

The previous prime is 40009000501. The next prime is 40009000519. The reversal of 40009000505 is 50500090004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40009000505 - 2² = 40009000501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40009000501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243365 + ... + 373154.

It is an arithmetic number, because the mean of its divisors is an integer number (6001822200).

Almost surely, 2^40009000505 is an apocalyptic number.

It is an amenable number.

40009000505 is a deficient number, since it is larger than the sum of its proper divisors (8005577095).

40009000505 is a wasteful number, since it uses less digits than its factorization.

40009000505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629503.

The product of its (nonzero) digits is 900, while the sum is 23.

Adding to 40009000505 its reverse (50500090004), we get a palindrome (90509090509).

The spelling of 40009000505 in words is "forty billion, nine million, five hundred five", and thus it is an aban number.