1103409 has 8 divisors (see below), whose sum is σ = 1634720. Its totient is φ = 735588.

The previous prime is 1103371. The next prime is 1103437. The reversal of 1103409 is 9043011.

It is not a de Polignac number, because 1103409 - 2⁷ = 1103281 is a prime.

It is a super-2 number, since 2×1103409² = 2435022842562, which contains 22 as substring.

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 = 1103391 and 1103400.

It is not an unprimeable number, because it can be changed into a prime (1103449) 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, 20407 + ... + 20460.

It is an arithmetic number, because the mean of its divisors is an integer number (204340).

2^1103409 is an apocalyptic number.

It is an amenable number.

1103409 is a deficient number, since it is larger than the sum of its proper divisors (531311).

1103409 is an equidigital number, since it uses as much as digits as its factorization.

1103409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40876 (or 40870 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1103409 is about 1050.4327679580. The cubic root of 1103409 is about 103.3345392390.

The spelling of 1103409 in words is "one million, one hundred three thousand, four hundred nine".