127899 has 10 divisors (see below), whose sum is σ = 191180. Its totient is φ = 85212.

The previous prime is 127877. The next prime is 127913. The reversal of 127899 is 998721.

It is a happy number.

It is not a de Polignac number, because 127899 - 2⁵ = 127867 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (127819) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 709 + ... + 870.

It is an arithmetic number, because the mean of its divisors is an integer number (19118).

2¹²⁷⁸⁹⁹ is an apocalyptic number.

127899 is a deficient number, since it is larger than the sum of its proper divisors (63281).

127899 is an equidigital number, since it uses as much as digits as its factorization.

127899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591 (or 1582 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 127899 is about 357.6296967535. The cubic root of 127899 is about 50.3835830884.

The spelling of 127899 in words is "one hundred twenty-seven thousand, eight hundred ninety-nine".