1091104 has 24 divisors (see below), whose sum is σ = 2455488. Its totient is φ = 467520.

The previous prime is 1091071. The next prime is 1091119. The reversal of 1091104 is 4011901.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2212 + ... + 2659.

It is an arithmetic number, because the mean of its divisors is an integer number (102312).

2^1091104 is an apocalyptic number.

1091104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1091104 is an abundant number, since it is smaller than the sum of its proper divisors (1364384).

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

1091104 is an equidigital number, since it uses as much as digits as its factorization.

1091104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4888 (or 4880 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 1091104 is about 1044.5592371905. The cubic root of 1091104 is about 102.9489802935.

The spelling of 1091104 in words is "one million, ninety-one thousand, one hundred four".