11189869 has 2 divisors, whose sum is σ = 11189870. Its totient is φ = 11189868.

The previous prime is 11189863. The next prime is 11189903. The reversal of 11189869 is 96898111.

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., 7767369 + 3422500 = 2787^2 + 1850^2 .

It is a cyclic number.

It is not a de Polignac number, because 11189869 - 2¹⁷ = 11058797 is a prime.

It is a super-2 number, since 2×11189869² = 250426336474322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11189863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5594934 + 5594935.

It is an arithmetic number, because the mean of its divisors is an integer number (5594935).

Almost surely, 2^11189869 is an apocalyptic number.

It is an amenable number.

11189869 is a deficient number, since it is larger than the sum of its proper divisors (1).

11189869 is an equidigital number, since it uses as much as digits as its factorization.

11189869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 43.

The square root of 11189869 is about 3345.1261560665. The cubic root of 11189869 is about 223.6703071268.

The spelling of 11189869 in words is "eleven million, one hundred eighty-nine thousand, eight hundred sixty-nine".