994000261 has 2 divisors, whose sum is σ = 994000262. Its totient is φ = 994000260.

The previous prime is 994000247. The next prime is 994000279. The reversal of 994000261 is 162000499.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 987844900 + 6155361 = 31430^2 + 2481^2 .

It is an emirp because it is prime and its reverse (162000499) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 994000261 - 2⁵ = 994000229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (994000061) 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, 497000130 + 497000131.

It is an arithmetic number, because the mean of its divisors is an integer number (497000131).

Almost surely, 2^994000261 is an apocalyptic number.

It is an amenable number.

994000261 is a deficient number, since it is larger than the sum of its proper divisors (1).

994000261 is an equidigital number, since it uses as much as digits as its factorization.

994000261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 994000261 is about 31527.7696800773. The cubic root of 994000261 is about 997.9960739628.

The spelling of 994000261 in words is "nine hundred ninety-four million, two hundred sixty-one", and thus it is an aban number.