127927993 has 2 divisors, whose sum is σ = 127927994. Its totient is φ = 127927992.

The previous prime is 127927963. The next prime is 127928011. The reversal of 127927993 is 399729721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75394489 + 52533504 = 8683^2 + 7248^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127927993 is a prime.

It is not a weakly prime, because it can be changed into another prime (127927963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63963996 + 63963997.

It is an arithmetic number, because the mean of its divisors is an integer number (63963997).

Almost surely, 2^127927993 is an apocalyptic number.

It is an amenable number.

127927993 is a deficient number, since it is larger than the sum of its proper divisors (1).

127927993 is an equidigital number, since it uses as much as digits as its factorization.

127927993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 428652, while the sum is 49.

The square root of 127927993 is about 11310.5257614313. The cubic root of 127927993 is about 503.8738989657.

The spelling of 127927993 in words is "one hundred twenty-seven million, nine hundred twenty-seven thousand, nine hundred ninety-three".