440771680289 has 2 divisors, whose sum is σ = 440771680290. Its totient is φ = 440771680288.

The previous prime is 440771680243. The next prime is 440771680397. The reversal of 440771680289 is 982086177044.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 372608913889 + 68162766400 = 610417^2 + 261080^2 .

It is a cyclic number.

It is not a de Polignac number, because 440771680289 - 2²⁰ = 440770631713 is a prime.

It is a super-2 number, since 2×440771680289² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (440771680229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220385840144 + 220385840145.

It is an arithmetic number, because the mean of its divisors is an integer number (220385840145).

Almost surely, 2^440771680289 is an apocalyptic number.

It is an amenable number.

440771680289 is a deficient number, since it is larger than the sum of its proper divisors (1).

440771680289 is an equidigital number, since it uses as much as digits as its factorization.

440771680289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5419008, while the sum is 56.

The spelling of 440771680289 in words is "four hundred forty billion, seven hundred seventy-one million, six hundred eighty thousand, two hundred eighty-nine".