9993397 has 2 divisors, whose sum is σ = 9993398. Its totient is φ = 9993396.

The previous prime is 9993383. The next prime is 9993407. The reversal of 9993397 is 7933999.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7349521 + 2643876 = 2711^2 + 1626^2 .

It is a cyclic number.

It is not a de Polignac number, because 9993397 - 2¹¹ = 9991349 is a prime.

It is an Ulam number.

9993397 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 9993397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9993317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4996698 + 4996699.

It is an arithmetic number, because the mean of its divisors is an integer number (4996699).

Almost surely, 2^9993397 is an apocalyptic number.

It is an amenable number.

9993397 is a deficient number, since it is larger than the sum of its proper divisors (1).

9993397 is an equidigital number, since it uses as much as digits as its factorization.

9993397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 413343, while the sum is 49.

The square root of 9993397 is about 3161.2334617994. The cubic root of 9993397 is about 215.3960394549.

The spelling of 9993397 in words is "nine million, nine hundred ninety-three thousand, three hundred ninety-seven".