11877889 has 2 divisors, whose sum is σ = 11877890. Its totient is φ = 11877888.

The previous prime is 11877871. The next prime is 11877893. The reversal of 11877889 is 98877811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11289600 + 588289 = 3360^2 + 767^2 .

It is an emirp because it is prime and its reverse (98877811) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11877889 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11877809) 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 as a sum of consecutive naturals, namely, 5938944 + 5938945.

It is an arithmetic number, because the mean of its divisors is an integer number (5938945).

Almost surely, 2^11877889 is an apocalyptic number.

It is an amenable number.

11877889 is a deficient number, since it is larger than the sum of its proper divisors (1).

11877889 is an equidigital number, since it uses as much as digits as its factorization.

11877889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 49.

The square root of 11877889 is about 3446.4313427080. The cubic root of 11877889 is about 228.1636316386.

The spelling of 11877889 in words is "eleven million, eight hundred seventy-seven thousand, eight hundred eighty-nine".