997930793 has 2 divisors, whose sum is σ = 997930794. Its totient is φ = 997930792.

The previous prime is 997930789. The next prime is 997930807. The reversal of 997930793 is 397039799.

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., 958026304 + 39904489 = 30952^2 + 6317^2 .

It is a cyclic number.

It is not a de Polignac number, because 997930793 - 2² = 997930789 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (997930723) 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, 498965396 + 498965397.

It is an arithmetic number, because the mean of its divisors is an integer number (498965397).

Almost surely, 2^997930793 is an apocalyptic number.

It is an amenable number.

997930793 is a deficient number, since it is larger than the sum of its proper divisors (1).

997930793 is an equidigital number, since it uses as much as digits as its factorization.

997930793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2893401, while the sum is 56.

The square root of 997930793 is about 31590.0426242194. The cubic root of 997930793 is about 999.3097880504.

The spelling of 997930793 in words is "nine hundred ninety-seven million, nine hundred thirty thousand, seven hundred ninety-three".