999968297 has 2 divisors, whose sum is σ = 999968298. Its totient is φ = 999968296.

The previous prime is 999968279. The next prime is 999968329. The reversal of 999968297 is 792869999.

Together with previous prime (999968279) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 999887641 + 80656 = 31621^2 + 284^2 .

It is an emirp because it is prime and its reverse (792869999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 999968297 - 2¹⁰ = 999967273 is a prime.

It is not a weakly prime, because it can be changed into another prime (999968267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499984148 + 499984149.

It is an arithmetic number, because the mean of its divisors is an integer number (499984149).

Almost surely, 2^999968297 is an apocalyptic number.

It is an amenable number.

999968297 is a deficient number, since it is larger than the sum of its proper divisors (1).

999968297 is an equidigital number, since it uses as much as digits as its factorization.

999968297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39680928, while the sum is 68.

The square root of 999968297 is about 31622.2753292675. The cubic root of 999968297 is about 999.9894322217.

The spelling of 999968297 in words is "nine hundred ninety-nine million, nine hundred sixty-eight thousand, two hundred ninety-seven".