40727792439839 has 2 divisors, whose sum is σ = 40727792439840. Its totient is φ = 40727792439838.

The previous prime is 40727792439773. The next prime is 40727792439923. The reversal of 40727792439839 is 93893429772704.

40727792439839 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40727792439839 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40727792436839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20363896219919 + 20363896219920.

It is an arithmetic number, because the mean of its divisors is an integer number (20363896219920).

Almost surely, 2^{40727792439839} is an apocalyptic number.

40727792439839 is a deficient number, since it is larger than the sum of its proper divisors (1).

40727792439839 is an equidigital number, since it uses as much as digits as its factorization.

40727792439839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152216576, while the sum is 74.

The spelling of 40727792439839 in words is "forty trillion, seven hundred twenty-seven billion, seven hundred ninety-two million, four hundred thirty-nine thousand, eight hundred thirty-nine".