984968689 has 2 divisors, whose sum is σ = 984968690. Its totient is φ = 984968688.

The previous prime is 984968657. The next prime is 984968711. The reversal of 984968689 is 986869489.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 600495025 + 384473664 = 24505^2 + 19608^2 .

It is an emirp because it is prime and its reverse (986869489) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 984968689 - 2⁵ = 984968657 is a prime.

It is not a weakly prime, because it can be changed into another prime (984968489) 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, 492484344 + 492484345.

It is an arithmetic number, because the mean of its divisors is an integer number (492484345).

Almost surely, 2^984968689 is an apocalyptic number.

It is an amenable number.

984968689 is a deficient number, since it is larger than the sum of its proper divisors (1).

984968689 is an equidigital number, since it uses as much as digits as its factorization.

984968689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 53747712, while the sum is 67.

The square root of 984968689 is about 31384.2108232786. The cubic root of 984968689 is about 994.9642467562.

The spelling of 984968689 in words is "nine hundred eighty-four million, nine hundred sixty-eight thousand, six hundred eighty-nine".