11289871 has 2 divisors, whose sum is σ = 11289872. Its totient is φ = 11289870.

The previous prime is 11289851. The next prime is 11289877. The reversal of 11289871 is 17898211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11289871 - 2¹⁷ = 11158799 is a prime.

It is a super-2 number, since 2×11289871² = 254922374393282, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11289871.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11289877) 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, 5644935 + 5644936.

It is an arithmetic number, because the mean of its divisors is an integer number (5644936).

Almost surely, 2^11289871 is an apocalyptic number.

11289871 is a deficient number, since it is larger than the sum of its proper divisors (1).

11289871 is an equidigital number, since it uses as much as digits as its factorization.

11289871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 37.

The square root of 11289871 is about 3360.0403271389. The cubic root of 11289871 is about 224.3346335051.

The spelling of 11289871 in words is "eleven million, two hundred eighty-nine thousand, eight hundred seventy-one".