127057789 has 2 divisors, whose sum is σ = 127057790. Its totient is φ = 127057788.

The previous prime is 127057771. The next prime is 127057793. The reversal of 127057789 is 987750721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115734564 + 11323225 = 10758^2 + 3365^2 .

It is a cyclic number.

It is not a de Polignac number, because 127057789 - 2⁵ = 127057757 is a prime.

It is a super-2 number, since 2×127057789² = 32287363491137042, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127057709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63528894 + 63528895.

It is an arithmetic number, because the mean of its divisors is an integer number (63528895).

Almost surely, 2^127057789 is an apocalyptic number.

It is an amenable number.

127057789 is a deficient number, since it is larger than the sum of its proper divisors (1).

127057789 is an equidigital number, since it uses as much as digits as its factorization.

127057789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 246960, while the sum is 46.

The square root of 127057789 is about 11271.9913502451. The cubic root of 127057789 is about 502.7287988872.

The spelling of 127057789 in words is "one hundred twenty-seven million, fifty-seven thousand, seven hundred eighty-nine".