994813 has 2 divisors, whose sum is σ = 994814. Its totient is φ = 994812.

The previous prime is 994811. The next prime is 994817. The reversal of 994813 is 318499.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 851929 + 142884 = 923^2 + 378^2 .

It is a cyclic number.

It is not a de Polignac number, because 994813 - 2¹ = 994811 is a prime.

Together with 994811, it forms a pair of twin primes.

994813 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (994811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497406 + 497407.

It is an arithmetic number, because the mean of its divisors is an integer number (497407).

2⁹⁹⁴⁸¹³ is an apocalyptic number.

It is an amenable number.

994813 is a deficient number, since it is larger than the sum of its proper divisors (1).

994813 is an equidigital number, since it uses as much as digits as its factorization.

994813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 34.

The square root of 994813 is about 997.4031281282. The cubic root of 994813 is about 99.8268001915.

The spelling of 994813 in words is "nine hundred ninety-four thousand, eight hundred thirteen".