127389797 has 2 divisors, whose sum is σ = 127389798. Its totient is φ = 127389796.

The previous prime is 127389767. The next prime is 127389817. The reversal of 127389797 is 797983721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91221601 + 36168196 = 9551^2 + 6014^2 .

It is a cyclic number.

It is not a de Polignac number, because 127389797 - 2⁸ = 127389541 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127389727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63694898 + 63694899.

It is an arithmetic number, because the mean of its divisors is an integer number (63694899).

Almost surely, 2^127389797 is an apocalyptic number.

It is an amenable number.

127389797 is a deficient number, since it is larger than the sum of its proper divisors (1).

127389797 is an equidigital number, since it uses as much as digits as its factorization.

127389797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1333584, while the sum is 53.

The square root of 127389797 is about 11286.7088648552. The cubic root of 127389797 is about 503.1663027291.

The spelling of 127389797 in words is "one hundred twenty-seven million, three hundred eighty-nine thousand, seven hundred ninety-seven".