127981339 has 2 divisors, whose sum is σ = 127981340. Its totient is φ = 127981338.

The previous prime is 127981327. The next prime is 127981349. The reversal of 127981339 is 933189721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 127981339 - 2⁷ = 127981211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 127981295 and 127981304.

It is not a weakly prime, because it can be changed into another prime (127981319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63990669 + 63990670.

It is an arithmetic number, because the mean of its divisors is an integer number (63990670).

Almost surely, 2^127981339 is an apocalyptic number.

127981339 is a deficient number, since it is larger than the sum of its proper divisors (1).

127981339 is an equidigital number, since it uses as much as digits as its factorization.

127981339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 43.

The square root of 127981339 is about 11312.8837614465. The cubic root of 127981339 is about 503.9439277399.

The spelling of 127981339 in words is "one hundred twenty-seven million, nine hundred eighty-one thousand, three hundred thirty-nine".