8331493 has 2 divisors, whose sum is σ = 8331494. Its totient is φ = 8331492.

The previous prime is 8331473. The next prime is 8331509. The reversal of 8331493 is 3941338.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5116644 + 3214849 = 2262^2 + 1793^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8331493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8331413) 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, 4165746 + 4165747.

It is an arithmetic number, because the mean of its divisors is an integer number (4165747).

Almost surely, 2^8331493 is an apocalyptic number.

It is an amenable number.

8331493 is a deficient number, since it is larger than the sum of its proper divisors (1).

8331493 is an equidigital number, since it uses as much as digits as its factorization.

8331493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 31.

The square root of 8331493 is about 2886.4325732641. The cubic root of 8331493 is about 202.7251410482.

The spelling of 8331493 in words is "eight million, three hundred thirty-one thousand, four hundred ninety-three".