8136397 has 2 divisors, whose sum is σ = 8136398. Its totient is φ = 8136396.

The previous prime is 8136391. The next prime is 8136433. The reversal of 8136397 is 7936318.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7241481 + 894916 = 2691^2 + 946^2 .

It is a cyclic number.

It is not a de Polignac number, because 8136397 - 2¹¹ = 8134349 is a prime.

It is a super-2 number, since 2×8136397² = 132401912283218, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8136391) 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, 4068198 + 4068199.

It is an arithmetic number, because the mean of its divisors is an integer number (4068199).

Almost surely, 2^8136397 is an apocalyptic number.

It is an amenable number.

8136397 is a deficient number, since it is larger than the sum of its proper divisors (1).

8136397 is an equidigital number, since it uses as much as digits as its factorization.

8136397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 37.

The square root of 8136397 is about 2852.4370282269. The cubic root of 8136397 is about 201.1302423954.

The spelling of 8136397 in words is "eight million, one hundred thirty-six thousand, three hundred ninety-seven".