1189669 has 4 divisors (see below), whose sum is σ = 1281196. Its totient is φ = 1098144.

The previous prime is 1189651. The next prime is 1189673. The reversal of 1189669 is 9669811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 112225 + 1077444 = 335^2 + 1038^2 .

It is a cyclic number.

It is not a de Polignac number, because 1189669 - 2⁵ = 1189637 is a prime.

It is a super-2 number, since 2×1189669² = 2830624659122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1189649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45744 + ... + 45769.

It is an arithmetic number, because the mean of its divisors is an integer number (320299).

2^1189669 is an apocalyptic number.

It is an amenable number.

1189669 is a deficient number, since it is larger than the sum of its proper divisors (91527).

1189669 is an equidigital number, since it uses as much as digits as its factorization.

1189669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91526.

The product of its digits is 23328, while the sum is 40.

The square root of 1189669 is about 1090.7194873110. The cubic root of 1189669 is about 105.9600240856.

The spelling of 1189669 in words is "one million, one hundred eighty-nine thousand, six hundred sixty-nine".