993994847 has 2 divisors, whose sum is σ = 993994848. Its totient is φ = 993994846.

The previous prime is 993994829. The next prime is 993994877. The reversal of 993994847 is 748499399.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (748499399) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 993994847 - 2⁶ = 993994783 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 993994847.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (993994877) 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, 496997423 + 496997424.

It is an arithmetic number, because the mean of its divisors is an integer number (496997424).

Almost surely, 2^993994847 is an apocalyptic number.

993994847 is a deficient number, since it is larger than the sum of its proper divisors (1).

993994847 is an equidigital number, since it uses as much as digits as its factorization.

993994847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17635968, while the sum is 62.

The square root of 993994847 is about 31527.6838191454. The cubic root of 993994847 is about 997.9942620382.

The spelling of 993994847 in words is "nine hundred ninety-three million, nine hundred ninety-four thousand, eight hundred forty-seven".