127799 has 4 divisors (see below), whose sum is σ = 146064. Its totient is φ = 109536.

The previous prime is 127781. The next prime is 127807. The reversal of 127799 is 997721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 997721 = 269 ⋅3709.

It is a de Polignac number, because none of the positive numbers 2^k-127799 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10 and base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9122 + ... + 9135.

It is an arithmetic number, because the mean of its divisors is an integer number (36516).

2¹²⁷⁷⁹⁹ is an apocalyptic number.

127799 is a deficient number, since it is larger than the sum of its proper divisors (18265).

127799 is an equidigital number, since it uses as much as digits as its factorization.

127799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18264.

The product of its digits is 7938, while the sum is 35.

The square root of 127799 is about 357.4898599961. The cubic root of 127799 is about 50.3704485787.

The spelling of 127799 in words is "one hundred twenty-seven thousand, seven hundred ninety-nine".