8216293 has 2 divisors, whose sum is σ = 8216294. Its totient is φ = 8216292.

The previous prime is 8216269. The next prime is 8216297. The reversal of 8216293 is 3926128.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7064964 + 1151329 = 2658^2 + 1073^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8216293 is a prime.

8216293 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8216297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4108146 + 4108147.

It is an arithmetic number, because the mean of its divisors is an integer number (4108147).

Almost surely, 2^8216293 is an apocalyptic number.

It is an amenable number.

8216293 is a deficient number, since it is larger than the sum of its proper divisors (1).

8216293 is an equidigital number, since it uses as much as digits as its factorization.

8216293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 31.

The square root of 8216293 is about 2866.4076820997. The cubic root of 8216293 is about 201.7864373647.

The spelling of 8216293 in words is "eight million, two hundred sixteen thousand, two hundred ninety-three".