127964897 has 2 divisors, whose sum is σ = 127964898. Its totient is φ = 127964896.

The previous prime is 127964887. The next prime is 127964909. The reversal of 127964897 is 798469721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109851361 + 18113536 = 10481^2 + 4256^2 .

It is a cyclic number.

It is not a de Polignac number, because 127964897 - 2¹⁰ = 127963873 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (127964827) 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, 63982448 + 63982449.

It is an arithmetic number, because the mean of its divisors is an integer number (63982449).

Almost surely, 2^127964897 is an apocalyptic number.

It is an amenable number.

127964897 is a deficient number, since it is larger than the sum of its proper divisors (1).

127964897 is an equidigital number, since it uses as much as digits as its factorization.

127964897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1524096, while the sum is 53.

The square root of 127964897 is about 11312.1570445252. The cubic root of 127964897 is about 503.9223459452.

The spelling of 127964897 in words is "one hundred twenty-seven million, nine hundred sixty-four thousand, eight hundred ninety-seven".