11043409 has 16 divisors (see below), whose sum is σ = 12490240. Its totient is φ = 9694080.

The previous prime is 11043401. The next prime is 11043419. The reversal of 11043409 is 90434011.

It is a cyclic number.

It is not a de Polignac number, because 11043409 - 2³ = 11043401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11043409.

It is not an unprimeable number, because it can be changed into a prime (11043401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26797 + ... + 27205.

It is an arithmetic number, because the mean of its divisors is an integer number (780640).

Almost surely, 2^11043409 is an apocalyptic number.

It is an amenable number.

11043409 is a deficient number, since it is larger than the sum of its proper divisors (1446831).

11043409 is a wasteful number, since it uses less digits than its factorization.

11043409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 11043409 is about 3323.1624997884. The cubic root of 11043409 is about 222.6901728066.

The spelling of 11043409 in words is "eleven million, forty-three thousand, four hundred nine".