997084999 has 2 divisors, whose sum is σ = 997085000. Its totient is φ = 997084998.

The previous prime is 997084997. The next prime is 997085053. The reversal of 997084999 is 999480799.

It is a weak prime.

It is an emirp because it is prime and its reverse (999480799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 997084999 - 2¹ = 997084997 is a prime.

Together with 997084997, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 997084999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997084997) 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, 498542499 + 498542500.

It is an arithmetic number, because the mean of its divisors is an integer number (498542500).

Almost surely, 2^997084999 is an apocalyptic number.

997084999 is a deficient number, since it is larger than the sum of its proper divisors (1).

997084999 is an equidigital number, since it uses as much as digits as its factorization.

997084999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13226976, while the sum is 64.

The square root of 997084999 is about 31576.6527516771. The cubic root of 997084999 is about 999.0273873313.

The spelling of 997084999 in words is "nine hundred ninety-seven million, eighty-four thousand, nine hundred ninety-nine".