40830783809 has 2 divisors, whose sum is σ = 40830783810. Its totient is φ = 40830783808.

The previous prime is 40830783793. The next prime is 40830783811. The reversal of 40830783809 is 90838703804.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38110848400 + 2719935409 = 195220^2 + 52153^2 .

It is a cyclic number.

It is not a de Polignac number, because 40830783809 - 2⁴ = 40830783793 is a prime.

It is a Sophie Germain prime.

Together with 40830783811, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (40830783839) 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 as a sum of consecutive naturals, namely, 20415391904 + 20415391905.

It is an arithmetic number, because the mean of its divisors is an integer number (20415391905).

Almost surely, 2^40830783809 is an apocalyptic number.

It is an amenable number.

40830783809 is a deficient number, since it is larger than the sum of its proper divisors (1).

40830783809 is an equidigital number, since it uses as much as digits as its factorization.

40830783809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 40830783809 in words is "forty billion, eight hundred thirty million, seven hundred eighty-three thousand, eight hundred nine".