1189841 has 8 divisors (see below), whose sum is σ = 1247400. Its totient is φ = 1133440.

The previous prime is 1189831. The next prime is 1189843. The reversal of 1189841 is 1489811.

It can be written as a sum of positive squares in 4 ways, for example, as 25600 + 1164241 = 160^2 + 1079^2 .

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-1189841 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1189798 and 1189807.

It is not an unprimeable number, because it can be changed into a prime (1189843) 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, 2351 + ... + 2811.

It is an arithmetic number, because the mean of its divisors is an integer number (155925).

2^1189841 is an apocalyptic number.

It is an amenable number.

1189841 is a deficient number, since it is larger than the sum of its proper divisors (57559).

1189841 is an equidigital number, since it uses as much as digits as its factorization.

1189841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579.

The product of its digits is 2304, while the sum is 32.

The square root of 1189841 is about 1090.7983314985. The cubic root of 1189841 is about 105.9651303367.

The spelling of 1189841 in words is "one million, one hundred eighty-nine thousand, eight hundred forty-one".