1169889 has 32 divisors (see below), whose sum is σ = 1969920. Its totient is φ = 602112.

The previous prime is 1169879. The next prime is 1169899. The reversal of 1169889 is 9889611.

It is an interprime number because it is at equal distance from previous prime (1169879) and next prime (1169899).

It is not a de Polignac number, because 1169889 - 2⁴ = 1169873 is a prime.

1169889 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1169889.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1169809) 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 31 ways as a sum of consecutive naturals, for example, 10297 + ... + 10409.

It is an arithmetic number, because the mean of its divisors is an integer number (61560).

2^1169889 is an apocalyptic number.

It is an amenable number.

1169889 is a deficient number, since it is larger than the sum of its proper divisors (800031).

1169889 is a wasteful number, since it uses less digits than its factorization.

1169889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169.

The product of its digits is 31104, while the sum is 42.

The square root of 1169889 is about 1081.6140716540. The cubic root of 1169889 is about 105.3694918946.

The spelling of 1169889 in words is "one million, one hundred sixty-nine thousand, eight hundred eighty-nine".