1109440 has 28 divisors (see below), whose sum is σ = 2642616. Its totient is φ = 443648.

The previous prime is 1109431. The next prime is 1109473. The reversal of 1109440 is 449011.

It is a super-2 number, since 2×1109440² = 2461714227200, which contains 22 as substring.

It is a congruent number.

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, 1414 + ... + 2053.

2^1109440 is an apocalyptic number.

1109440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1109440 is an abundant number, since it is smaller than the sum of its proper divisors (1533176).

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

1109440 is an equidigital number, since it uses as much as digits as its factorization.

1109440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3484 (or 3474 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1109440 is about 1053.2995775182. The cubic root of 1109440 is about 103.5224655038.

The spelling of 1109440 in words is "one million, one hundred nine thousand, four hundred forty".