1189389 has 8 divisors (see below), whose sum is σ = 1607872. Its totient is φ = 781920.

The previous prime is 1189387. The next prime is 1189403. The reversal of 1189389 is 9839811.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1189389 - 2¹ = 1189387 is a prime.

It is a Duffinian number.

1189389 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1189387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2497 + ... + 2934.

It is an arithmetic number, because the mean of its divisors is an integer number (200984).

2^1189389 is an apocalyptic number.

It is an amenable number.

1189389 is a deficient number, since it is larger than the sum of its proper divisors (418483).

1189389 is an equidigital number, since it uses as much as digits as its factorization.

1189389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5507.

The product of its digits is 15552, while the sum is 39.

The square root of 1189389 is about 1090.5911241157. The cubic root of 1189389 is about 105.9517105309.

The spelling of 1189389 in words is "one million, one hundred eighty-nine thousand, three hundred eighty-nine".