6397797229 has 2 divisors, whose sum is σ = 6397797230. Its totient is φ = 6397797228.

The previous prime is 6397797223. The next prime is 6397797319. The reversal of 6397797229 is 9227977936.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5341417225 + 1056380004 = 73085^2 + 32502^2 .

It is a cyclic number.

It is not a de Polignac number, because 6397797229 - 2²⁹ = 5860926317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6397797223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3198898614 + 3198898615.

It is an arithmetic number, because the mean of its divisors is an integer number (3198898615).

Almost surely, 2^6397797229 is an apocalyptic number.

It is an amenable number.

6397797229 is a deficient number, since it is larger than the sum of its proper divisors (1).

6397797229 is an equidigital number, since it uses as much as digits as its factorization.

6397797229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18003384, while the sum is 61.

The square root of 6397797229 is about 79986.2314964269. The cubic root of 6397797229 is about 1856.4225015593.

The spelling of 6397797229 in words is "six billion, three hundred ninety-seven million, seven hundred ninety-seven thousand, two hundred twenty-nine".