11880971 has 4 divisors (see below), whose sum is σ = 11888472. Its totient is φ = 11873472.

The previous prime is 11880937. The next prime is 11880983. The reversal of 11880971 is 17908811.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 17908811 = 19 ⋅942569.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11880971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11880931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341 + ... + 4886.

It is an arithmetic number, because the mean of its divisors is an integer number (2972118).

Almost surely, 2^11880971 is an apocalyptic number.

11880971 is a deficient number, since it is larger than the sum of its proper divisors (7501).

11880971 is an equidigital number, since it uses as much as digits as its factorization.

11880971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7500.

The product of its (nonzero) digits is 4032, while the sum is 35.

The square root of 11880971 is about 3446.8784428813. The cubic root of 11880971 is about 228.1833640872.

The spelling of 11880971 in words is "eleven million, eight hundred eighty thousand, nine hundred seventy-one".