1189406 has 8 divisors (see below), whose sum is σ = 1845720. Its totient is φ = 574168.

The previous prime is 1189403. The next prime is 1189417. The reversal of 1189406 is 6049811.

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

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1189403) 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, 10196 + ... + 10311.

It is an arithmetic number, because the mean of its divisors is an integer number (230715).

2^1189406 is an apocalyptic number.

1189406 is a deficient number, since it is larger than the sum of its proper divisors (656314).

1189406 is a wasteful number, since it uses less digits than its factorization.

1189406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20538.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 1189406 is about 1090.5989180262. The cubic root of 1189406 is about 105.9522153197.

1189406 divided by its sum of digits (29) gives a palindrome (41014).

The spelling of 1189406 in words is "one million, one hundred eighty-nine thousand, four hundred six".