40830785839 has 2 divisors, whose sum is σ = 40830785840. Its totient is φ = 40830785838.

The previous prime is 40830785833. The next prime is 40830785869. The reversal of 40830785839 is 93858703804.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40830785839 - 2²¹ = 40828688687 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40830785839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40830785833) 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 as a sum of consecutive naturals, namely, 20415392919 + 20415392920.

It is an arithmetic number, because the mean of its divisors is an integer number (20415392920).

Almost surely, 2^40830785839 is an apocalyptic number.

40830785839 is a deficient number, since it is larger than the sum of its proper divisors (1).

40830785839 is an equidigital number, since it uses as much as digits as its factorization.

40830785839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5806080, while the sum is 55.

The spelling of 40830785839 in words is "forty billion, eight hundred thirty million, seven hundred eighty-five thousand, eight hundred thirty-nine".