9797993 has 2 divisors, whose sum is σ = 9797994. Its totient is φ = 9797992.

The previous prime is 9797959. The next prime is 9797999. The reversal of 9797993 is 3997979.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7118224 + 2679769 = 2668^2 + 1637^2 .

It is an emirp because it is prime and its reverse (3997979) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9797993 - 2¹² = 9793897 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9797999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4898996 + 4898997.

It is an arithmetic number, because the mean of its divisors is an integer number (4898997).

Almost surely, 2^9797993 is an apocalyptic number.

It is an amenable number.

9797993 is a deficient number, since it is larger than the sum of its proper divisors (1).

9797993 is an equidigital number, since it uses as much as digits as its factorization.

9797993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 964467, while the sum is 53.

The square root of 9797993 is about 3130.1745957694. The cubic root of 9797993 is about 213.9828865111.

The spelling of 9797993 in words is "nine million, seven hundred ninety-seven thousand, nine hundred ninety-three".