994843143 has 12 divisors (see below), whose sum is σ = 1642280848. Its totient is φ = 568481760.

The previous prime is 994843139. The next prime is 994843153. The reversal of 994843143 is 341348499.

It is a happy number.

It is not a de Polignac number, because 994843143 - 2² = 994843139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (994843153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7895518 + ... + 7895643.

Almost surely, 2^994843143 is an apocalyptic number.

994843143 is a deficient number, since it is larger than the sum of its proper divisors (647437705).

994843143 is a wasteful number, since it uses less digits than its factorization.

994843143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15791174 (or 15791171 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 994843143 is about 31541.1341425764. The cubic root of 994843143 is about 998.2780843751.

The spelling of 994843143 in words is "nine hundred ninety-four million, eight hundred forty-three thousand, one hundred forty-three".