7397993 has 2 divisors, whose sum is σ = 7397994. Its totient is φ = 7397992.

The previous prime is 7397981. The next prime is 7398007. The reversal of 7397993 is 3997937.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6310144 + 1087849 = 2512^2 + 1043^2 .

It is a cyclic number.

It is not a de Polignac number, because 7397993 - 2¹⁰ = 7396969 is a prime.

It is not a weakly prime, because it can be changed into another prime (7397953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3698996 + 3698997.

It is an arithmetic number, because the mean of its divisors is an integer number (3698997).

Almost surely, 2^7397993 is an apocalyptic number.

It is an amenable number.

7397993 is a deficient number, since it is larger than the sum of its proper divisors (1).

7397993 is an equidigital number, since it uses as much as digits as its factorization.

7397993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 321489, while the sum is 47.

The square root of 7397993 is about 2719.9251827946. The cubic root of 7397993 is about 194.8518971869.

The spelling of 7397993 in words is "seven million, three hundred ninety-seven thousand, nine hundred ninety-three".