40382108209 has 9 divisors (see below), whose sum is σ = 40798885689. Its totient is φ = 39969551700.

The previous prime is 40382108111. The next prime is 40382108287. The reversal of 40382108209 is 90280128304.

The square root of 40382108209 is 200953.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 40382108209 - 2¹⁵ = 40382075441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40382108009) 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 8 ways as a sum of consecutive naturals, for example, 20697184 + ... + 20699134.

It is an arithmetic number, because the mean of its divisors is an integer number (4533209521).

Almost surely, 2^40382108209 is an apocalyptic number.

40382108209 is the 200953-rd square number.

40382108209 is the 100477-th centered octagonal number.

It is an amenable number.

40382108209 is a deficient number, since it is larger than the sum of its proper divisors (416777480).

40382108209 is an frugal number, since it uses more digits than its factorization.

40382108209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4108 (or 2054 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The spelling of 40382108209 in words is "forty billion, three hundred eighty-two million, one hundred eight thousand, two hundred nine".