127949 has 4 divisors (see below), whose sum is σ = 133536. Its totient is φ = 122364.

The previous prime is 127931. The next prime is 127951. The reversal of 127949 is 949721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 949721 = 29 ⋅32749.

It is a cyclic number.

It is not a de Polignac number, because 127949 - 2¹² = 123853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127979) 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, 2759 + ... + 2804.

It is an arithmetic number, because the mean of its divisors is an integer number (33384).

2¹²⁷⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

127949 is a deficient number, since it is larger than the sum of its proper divisors (5587).

127949 is an equidigital number, since it uses as much as digits as its factorization.

127949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5586.

The product of its digits is 4536, while the sum is 32.

The square root of 127949 is about 357.6995946321. The cubic root of 127949 is about 50.3901477761.

The spelling of 127949 in words is "one hundred twenty-seven thousand, nine hundred forty-nine".