127089961 has 2 divisors, whose sum is σ = 127089962. Its totient is φ = 127089960.

The previous prime is 127089947. The next prime is 127089971. The reversal of 127089961 is 169980721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68475625 + 58614336 = 8275^2 + 7656^2 .

It is a cyclic number.

It is not a de Polignac number, because 127089961 - 2⁹ = 127089449 is a prime.

It is not a weakly prime, because it can be changed into another prime (127089971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63544980 + 63544981.

It is an arithmetic number, because the mean of its divisors is an integer number (63544981).

Almost surely, 2^127089961 is an apocalyptic number.

It is an amenable number.

127089961 is a deficient number, since it is larger than the sum of its proper divisors (1).

127089961 is an equidigital number, since it uses as much as digits as its factorization.

127089961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 43.

The square root of 127089961 is about 11273.4183369553. The cubic root of 127089961 is about 502.7712268934.

The spelling of 127089961 in words is "one hundred twenty-seven million, eighty-nine thousand, nine hundred sixty-one".