127089899 has 4 divisors (see below), whose sum is σ = 127373400. Its totient is φ = 126806400.

The previous prime is 127089889. The next prime is 127089947. The reversal of 127089899 is 998980721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 998980721 = 71 ⋅14070151.

It is a cyclic number.

It is not a de Polignac number, because 127089899 - 2⁸ = 127089643 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 127089899.

It is not an unprimeable number, because it can be changed into a prime (127089829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141077 + ... + 141974.

It is an arithmetic number, because the mean of its divisors is an integer number (31843350).

Almost surely, 2^127089899 is an apocalyptic number.

127089899 is a deficient number, since it is larger than the sum of its proper divisors (283501).

127089899 is an equidigital number, since it uses as much as digits as its factorization.

127089899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283500.

The product of its (nonzero) digits is 653184, while the sum is 53.

The square root of 127089899 is about 11273.4155871235. The cubic root of 127089899 is about 502.7711451355.

The spelling of 127089899 in words is "one hundred twenty-seven million, eighty-nine thousand, eight hundred ninety-nine".