840459883 has 2 divisors, whose sum is σ = 840459884. Its totient is φ = 840459882.

The previous prime is 840459863. The next prime is 840459947. The reversal of 840459883 is 388954048.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 840459883 - 2⁹ = 840459371 is a prime.

It is not a weakly prime, because it can be changed into another prime (840459803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420229941 + 420229942.

It is an arithmetic number, because the mean of its divisors is an integer number (420229942).

Almost surely, 2^840459883 is an apocalyptic number.

840459883 is a deficient number, since it is larger than the sum of its proper divisors (1).

840459883 is an equidigital number, since it uses as much as digits as its factorization.

840459883 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1105920, while the sum is 49.

The square root of 840459883 is about 28990.6861422768. The cubic root of 840459883 is about 943.7109541146.

The spelling of 840459883 in words is "eight hundred forty million, four hundred fifty-nine thousand, eight hundred eighty-three".