8211393 has 12 divisors (see below), whose sum is σ = 12056148. Its totient is φ = 5384160.

The previous prime is 8211389. The next prime is 8211397. The reversal of 8211393 is 3931128.

It is an interprime number because it is at equal distance from previous prime (8211389) and next prime (8211397).

It can be written as a sum of positive squares in 2 ways, for example, as 986049 + 7225344 = 993^2 + 2688^2 .

It is not a de Polignac number, because 8211393 - 2² = 8211389 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8211397) 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 in 11 ways as a sum of consecutive naturals, for example, 6930 + ... + 8027.

It is an arithmetic number, because the mean of its divisors is an integer number (1004679).

Almost surely, 2^8211393 is an apocalyptic number.

It is an amenable number.

8211393 is a deficient number, since it is larger than the sum of its proper divisors (3844755).

8211393 is a wasteful number, since it uses less digits than its factorization.

8211393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15024 (or 15021 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 8211393 is about 2865.5528262449. The cubic root of 8211393 is about 201.7463158580.

The spelling of 8211393 in words is "eight million, two hundred eleven thousand, three hundred ninety-three".