1191104 has 28 divisors (see below), whose sum is σ = 2432304. Its totient is φ = 578304.

The previous prime is 1191103. The next prime is 1191107. The reversal of 1191104 is 4011911.

It is not an unprimeable number, because it can be changed into a prime (1191103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2117 + ... + 2619.

It is an arithmetic number, because the mean of its divisors is an integer number (86868).

2^1191104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1191104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1216152).

1191104 is an abundant number, since it is smaller than the sum of its proper divisors (1241200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1191104 is an equidigital number, since it uses as much as digits as its factorization.

1191104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552 (or 542 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 17.

The square root of 1191104 is about 1091.3771117263. The cubic root of 1191104 is about 106.0026105919.

The spelling of 1191104 in words is "one million, one hundred ninety-one thousand, one hundred four".