127516889 has 2 divisors, whose sum is σ = 127516890. Its totient is φ = 127516888.

The previous prime is 127516861. The next prime is 127516913. The reversal of 127516889 is 988615721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93934864 + 33582025 = 9692^2 + 5795^2 .

It is a cyclic number.

It is not a de Polignac number, because 127516889 - 2⁸ = 127516633 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (127516819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63758444 + 63758445.

It is an arithmetic number, because the mean of its divisors is an integer number (63758445).

Almost surely, 2^127516889 is an apocalyptic number.

It is an amenable number.

127516889 is a deficient number, since it is larger than the sum of its proper divisors (1).

127516889 is an equidigital number, since it uses as much as digits as its factorization.

127516889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 47.

The square root of 127516889 is about 11292.3376233621. The cubic root of 127516889 is about 503.3335771334. Note that the first 3 decimals are identical.

The spelling of 127516889 in words is "one hundred twenty-seven million, five hundred sixteen thousand, eight hundred eighty-nine".