996668459 has 2 divisors, whose sum is σ = 996668460. Its totient is φ = 996668458.

The previous prime is 996668443. The next prime is 996668521. The reversal of 996668459 is 954866699.

It is an a-pointer prime, because the next prime (996668521) can be obtained adding 996668459 to its sum of digits (62).

It is a weak prime.

It is an emirp because it is prime and its reverse (954866699) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 996668459 - 2⁴ = 996668443 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (996668419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498334229 + 498334230.

It is an arithmetic number, because the mean of its divisors is an integer number (498334230).

Almost surely, 2^996668459 is an apocalyptic number.

996668459 is a deficient number, since it is larger than the sum of its proper divisors (1).

996668459 is an equidigital number, since it uses as much as digits as its factorization.

996668459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25194240, while the sum is 62.

The square root of 996668459 is about 31570.0563667536. The cubic root of 996668459 is about 998.8882508051. Note that the first 3 decimals are identical.

The spelling of 996668459 in words is "nine hundred ninety-six million, six hundred sixty-eight thousand, four hundred fifty-nine".