994497843 has 8 divisors (see below), whose sum is σ = 1326491856. Its totient is φ = 662751200.

The previous prime is 994497839. The next prime is 994497853. The reversal of 994497843 is 348794499.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 994497843 - 2² = 994497839 is a prime.

It is not an unprimeable number, because it can be changed into a prime (994497853) 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 in 7 ways as a sum of consecutive naturals, for example, 52248 + ... + 68693.

It is an arithmetic number, because the mean of its divisors is an integer number (165811482).

Almost surely, 2^994497843 is an apocalyptic number.

994497843 is a deficient number, since it is larger than the sum of its proper divisors (331994013).

994497843 is a wasteful number, since it uses less digits than its factorization.

994497843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123685.

The product of its digits is 7838208, while the sum is 57.

The square root of 994497843 is about 31535.6598630820. The cubic root of 994497843 is about 998.1625735987.

The spelling of 994497843 in words is "nine hundred ninety-four million, four hundred ninety-seven thousand, eight hundred forty-three".