40409508001 has 4 divisors (see below), whose sum is σ = 40445946900. Its totient is φ = 40373069104.

The previous prime is 40409507989. The next prime is 40409508127. The reversal of 40409508001 is 10080590404.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4385088400 + 36024419601 = 66220^2 + 189801^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40409508001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40409508701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18217786 + ... + 18220003.

It is an arithmetic number, because the mean of its divisors is an integer number (10111486725).

Almost surely, 2^40409508001 is an apocalyptic number.

It is an amenable number.

40409508001 is a deficient number, since it is larger than the sum of its proper divisors (36438899).

40409508001 is a wasteful number, since it uses less digits than its factorization.

40409508001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36438898.

The product of its (nonzero) digits is 5760, while the sum is 31.

The spelling of 40409508001 in words is "forty billion, four hundred nine million, five hundred eight thousand, one".