997030049 has 2 divisors, whose sum is σ = 997030050. Its totient is φ = 997030048.

The previous prime is 997030003. The next prime is 997030057. The reversal of 997030049 is 940030799.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 911134225 + 85895824 = 30185^2 + 9268^2 .

It is a cyclic number.

It is not a de Polignac number, because 997030049 - 2⁸ = 997029793 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 997029988 and 997030015.

It is not a weakly prime, because it can be changed into another prime (997030079) 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 as a sum of consecutive naturals, namely, 498515024 + 498515025.

It is an arithmetic number, because the mean of its divisors is an integer number (498515025).

Almost surely, 2^997030049 is an apocalyptic number.

It is an amenable number.

997030049 is a deficient number, since it is larger than the sum of its proper divisors (1).

997030049 is an equidigital number, since it uses as much as digits as its factorization.

997030049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 997030049 is about 31575.7826347978. The cubic root of 997030049 is about 999.0090346454.

The spelling of 997030049 in words is "nine hundred ninety-seven million, thirty thousand, forty-nine".