993823147 has 2 divisors, whose sum is σ = 993823148. Its totient is φ = 993823146.

The previous prime is 993823109. The next prime is 993823153. The reversal of 993823147 is 741328399.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-993823147 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 993823097 and 993823106.

It is not a weakly prime, because it can be changed into another prime (993323147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496911573 + 496911574.

It is an arithmetic number, because the mean of its divisors is an integer number (496911574).

Almost surely, 2^993823147 is an apocalyptic number.

993823147 is a deficient number, since it is larger than the sum of its proper divisors (1).

993823147 is an equidigital number, since it uses as much as digits as its factorization.

993823147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 46.

The square root of 993823147 is about 31524.9606978343. The cubic root of 993823147 is about 997.9367951132.

The spelling of 993823147 in words is "nine hundred ninety-three million, eight hundred twenty-three thousand, one hundred forty-seven".