440866782677 has 2 divisors, whose sum is σ = 440866782678. Its totient is φ = 440866782676.

The previous prime is 440866782649. The next prime is 440866782743. The reversal of 440866782677 is 776287668044.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 342563213521 + 98303569156 = 585289^2 + 313534^2 .

It is a cyclic number.

It is not a de Polignac number, because 440866782677 - 2¹⁶ = 440866717141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440866782607) 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, 220433391338 + 220433391339.

It is an arithmetic number, because the mean of its divisors is an integer number (220433391339).

Almost surely, 2^440866782677 is an apocalyptic number.

It is an amenable number.

440866782677 is a deficient number, since it is larger than the sum of its proper divisors (1).

440866782677 is an equidigital number, since it uses as much as digits as its factorization.

440866782677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151732224, while the sum is 65.

The spelling of 440866782677 in words is "four hundred forty billion, eight hundred sixty-six million, seven hundred eighty-two thousand, six hundred seventy-seven".