997703793 has 6 divisors (see below), whose sum is σ = 1441127714. Its totient is φ = 665135856.

The previous prime is 997703771. The next prime is 997703807. The reversal of 997703793 is 397307799.

It can be written as a sum of positive squares in only one way, i.e., 812934144 + 184769649 = 28512^2 + 13593^2 .

It is not a de Polignac number, because 997703793 - 2⁸ = 997703537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (997703743) 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 in 5 ways as a sum of consecutive naturals, for example, 55427980 + ... + 55427997.

Almost surely, 2^997703793 is an apocalyptic number.

It is an amenable number.

997703793 is a deficient number, since it is larger than the sum of its proper divisors (443423921).

997703793 is a wasteful number, since it uses less digits than its factorization.

997703793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110855983 (or 110855980 counting only the distinct ones).

The product of its (nonzero) digits is 2250423, while the sum is 54.

The square root of 997703793 is about 31586.4495155755. The cubic root of 997703793 is about 999.2340110774.

The spelling of 997703793 in words is "nine hundred ninety-seven million, seven hundred three thousand, seven hundred ninety-three".