1109380 has 12 divisors (see below), whose sum is σ = 2329740. Its totient is φ = 443744.

The previous prime is 1109363. The next prime is 1109387. The reversal of 1109380 is 839011.

It can be written as a sum of positive squares in 2 ways, for example, as 125316 + 984064 = 354^2 + 992^2 .

It is not an unprimeable number, because it can be changed into a prime (1109387) 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, 27715 + ... + 27754.

It is an arithmetic number, because the mean of its divisors is an integer number (194145).

2^1109380 is an apocalyptic number.

1109380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1109380 is an abundant number, since it is smaller than the sum of its proper divisors (1220360).

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

1109380 is a wasteful number, since it uses less digits than its factorization.

1109380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55478 (or 55476 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1109380 is about 1053.2710952077. The cubic root of 1109380 is about 103.5205992590.

The spelling of 1109380 in words is "one million, one hundred nine thousand, three hundred eighty".