7920193 has 2 divisors, whose sum is σ = 7920194. Its totient is φ = 7920192.

The previous prime is 7920173. The next prime is 7920203. The reversal of 7920193 is 3910297.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5461569 + 2458624 = 2337^2 + 1568^2 .

It is an emirp because it is prime and its reverse (3910297) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7920193 is a prime.

It is not a weakly prime, because it can be changed into another prime (7920163) 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, 3960096 + 3960097.

It is an arithmetic number, because the mean of its divisors is an integer number (3960097).

Almost surely, 2^7920193 is an apocalyptic number.

It is an amenable number.

7920193 is a deficient number, since it is larger than the sum of its proper divisors (1).

7920193 is an equidigital number, since it uses as much as digits as its factorization.

7920193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 7920193 is about 2814.2837454670. The cubic root of 7920193 is about 199.3327178151.

The spelling of 7920193 in words is "seven million, nine hundred twenty thousand, one hundred ninety-three".