440239016797 has 2 divisors, whose sum is σ = 440239016798. Its totient is φ = 440239016796.

The previous prime is 440239016783. The next prime is 440239016803. The reversal of 440239016797 is 797610932044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 302652919321 + 137586097476 = 550139^2 + 370926^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-440239016797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440239016747) 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, 220119508398 + 220119508399.

It is an arithmetic number, because the mean of its divisors is an integer number (220119508399).

Almost surely, 2^440239016797 is an apocalyptic number.

It is an amenable number.

440239016797 is a deficient number, since it is larger than the sum of its proper divisors (1).

440239016797 is an equidigital number, since it uses as much as digits as its factorization.

440239016797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2286144, while the sum is 52.

The spelling of 440239016797 in words is "four hundred forty billion, two hundred thirty-nine million, sixteen thousand, seven hundred ninety-seven".