11977127 has 4 divisors (see below), whose sum is σ = 11989776. Its totient is φ = 11964480.

The previous prime is 11977123. The next prime is 11977153. The reversal of 11977127 is 72177911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72177911 = 13 ⋅5552147.

It is a cyclic number.

It is not a de Polignac number, because 11977127 - 2² = 11977123 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 (11977123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4778 + ... + 6839.

It is an arithmetic number, because the mean of its divisors is an integer number (2997444).

Almost surely, 2^11977127 is an apocalyptic number.

11977127 is a deficient number, since it is larger than the sum of its proper divisors (12649).

11977127 is a wasteful number, since it uses less digits than its factorization.

11977127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12648.

The product of its digits is 6174, while the sum is 35.

The square root of 11977127 is about 3460.7986072582. The cubic root of 11977127 is about 228.7972946096.

The spelling of 11977127 in words is "eleven million, nine hundred seventy-seven thousand, one hundred twenty-seven".