840114817 has 2 divisors, whose sum is σ = 840114818. Its totient is φ = 840114816.

The previous prime is 840114799. The next prime is 840114829. The reversal of 840114817 is 718411048.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 825068176 + 15046641 = 28724^2 + 3879^2 .

It is a cyclic number.

It is not a de Polignac number, because 840114817 - 2¹⁵ = 840082049 is a prime.

It is not a weakly prime, because it can be changed into another prime (840114617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420057408 + 420057409.

It is an arithmetic number, because the mean of its divisors is an integer number (420057409).

Almost surely, 2^840114817 is an apocalyptic number.

It is an amenable number.

840114817 is a deficient number, since it is larger than the sum of its proper divisors (1).

840114817 is an equidigital number, since it uses as much as digits as its factorization.

840114817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7168, while the sum is 34.

The square root of 840114817 is about 28984.7342061300. The cubic root of 840114817 is about 943.5817839039.

The spelling of 840114817 in words is "eight hundred forty million, one hundred fourteen thousand, eight hundred seventeen".