994893149 has 2 divisors, whose sum is σ = 994893150. Its totient is φ = 994893148.

The previous prime is 994893139. The next prime is 994893197. The reversal of 994893149 is 941398499.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 498405625 + 496487524 = 22325^2 + 22282^2 .

It is a cyclic number.

It is not a de Polignac number, because 994893149 - 2⁸ = 994892893 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 994893094 and 994893103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (994893139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497446574 + 497446575.

It is an arithmetic number, because the mean of its divisors is an integer number (497446575).

Almost surely, 2^994893149 is an apocalyptic number.

It is an amenable number.

994893149 is a deficient number, since it is larger than the sum of its proper divisors (1).

994893149 is an equidigital number, since it uses as much as digits as its factorization.

994893149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2519424, while the sum is 56.

The square root of 994893149 is about 31541.9268434888. The cubic root of 994893149 is about 998.2948103142.

The spelling of 994893149 in words is "nine hundred ninety-four million, eight hundred ninety-three thousand, one hundred forty-nine".