996123847 has 2 divisors, whose sum is σ = 996123848. Its totient is φ = 996123846.

The previous prime is 996123841. The next prime is 996123881. The reversal of 996123847 is 748321699.

It is a weak prime.

It is an emirp because it is prime and its reverse (748321699) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 996123847 - 2¹¹ = 996121799 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 996123847.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (996123841) 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, 498061923 + 498061924.

It is an arithmetic number, because the mean of its divisors is an integer number (498061924).

Almost surely, 2^996123847 is an apocalyptic number.

996123847 is a deficient number, since it is larger than the sum of its proper divisors (1).

996123847 is an equidigital number, since it uses as much as digits as its factorization.

996123847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 49.

The square root of 996123847 is about 31561.4297363095. The cubic root of 996123847 is about 998.7062760000.

The spelling of 996123847 in words is "nine hundred ninety-six million, one hundred twenty-three thousand, eight hundred forty-seven".