994649143 has 2 divisors, whose sum is σ = 994649144. Its totient is φ = 994649142.

The previous prime is 994649113. The next prime is 994649177. The reversal of 994649143 is 341946499.

994649143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (341946499) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-994649143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (994649113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497324571 + 497324572.

It is an arithmetic number, because the mean of its divisors is an integer number (497324572).

Almost surely, 2^994649143 is an apocalyptic number.

994649143 is a deficient number, since it is larger than the sum of its proper divisors (1).

994649143 is an equidigital number, since it uses as much as digits as its factorization.

994649143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 49.

The square root of 994649143 is about 31538.0586434866. The cubic root of 994649143 is about 998.2131902124.

The spelling of 994649143 in words is "nine hundred ninety-four million, six hundred forty-nine thousand, one hundred forty-three".