11190889 has 2 divisors, whose sum is σ = 11190890. Its totient is φ = 11190888.

The previous prime is 11190887. The next prime is 11190899. The reversal of 11190889 is 98809111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6051600 + 5139289 = 2460^2 + 2267^2 .

It is an emirp because it is prime and its reverse (98809111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11190889 - 2¹ = 11190887 is a prime.

It is a super-2 number, since 2×11190889² = 250471993220642, which contains 22 as substring.

Together with 11190887, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11190887) 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, 5595444 + 5595445.

It is an arithmetic number, because the mean of its divisors is an integer number (5595445).

Almost surely, 2^11190889 is an apocalyptic number.

It is an amenable number.

11190889 is a deficient number, since it is larger than the sum of its proper divisors (1).

11190889 is an equidigital number, since it uses as much as digits as its factorization.

11190889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 37.

The square root of 11190889 is about 3345.2786132100. The cubic root of 11190889 is about 223.6771030593.

The spelling of 11190889 in words is "eleven million, one hundred ninety thousand, eight hundred eighty-nine".