1189423 has 8 divisors (see below), whose sum is σ = 1232000. Its totient is φ = 1147608.

The previous prime is 1189417. The next prime is 1189453. The reversal of 1189423 is 3249811.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1189423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1189391 and 1189400.

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 7 ways as a sum of consecutive naturals, for example, 5878 + ... + 6076.

It is an arithmetic number, because the mean of its divisors is an integer number (154000).

2^1189423 is an apocalyptic number.

1189423 is a deficient number, since it is larger than the sum of its proper divisors (42577).

1189423 is a wasteful number, since it uses less digits than its factorization.

1189423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381.

The product of its digits is 1728, while the sum is 28.

The square root of 1189423 is about 1090.6067118811. The cubic root of 1189423 is about 105.9527201036.

The spelling of 1189423 in words is "one million, one hundred eighty-nine thousand, four hundred twenty-three".