994222042493 has 2 divisors, whose sum is σ = 994222042494. Its totient is φ = 994222042492.

The previous prime is 994222042453. The next prime is 994222042543. The reversal of 994222042493 is 394240222499.

It is an a-pointer prime, because the next prime (994222042543) can be obtained adding 994222042493 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 882947760409 + 111274282084 = 939653^2 + 333578^2 .

It is a cyclic number.

It is not a de Polignac number, because 994222042493 - 2¹⁰ = 994222041469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (994222042403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497111021246 + 497111021247.

It is an arithmetic number, because the mean of its divisors is an integer number (497111021247).

Almost surely, 2^994222042493 is an apocalyptic number.

It is an amenable number.

994222042493 is a deficient number, since it is larger than the sum of its proper divisors (1).

994222042493 is an equidigital number, since it uses as much as digits as its factorization.

994222042493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2239488, while the sum is 50.

The spelling of 994222042493 in words is "nine hundred ninety-four billion, two hundred twenty-two million, forty-two thousand, four hundred ninety-three".