11170409 has 4 divisors (see below), whose sum is σ = 11442900. Its totient is φ = 10897920.

The previous prime is 11170403. The next prime is 11170417. The reversal of 11170409 is 90407111.

11170409 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90407111 = 19 ⋅4758269.

It can be written as a sum of positive squares in 2 ways, for example, as 3988009 + 7182400 = 1997^2 + 2680^2 .

It is a cyclic number.

It is not a de Polignac number, because 11170409 - 2²⁰ = 10121833 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11170403) 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, 136184 + ... + 136265.

It is an arithmetic number, because the mean of its divisors is an integer number (2860725).

Almost surely, 2^11170409 is an apocalyptic number.

It is an amenable number.

11170409 is a deficient number, since it is larger than the sum of its proper divisors (272491).

11170409 is an equidigital number, since it uses as much as digits as its factorization.

11170409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272490.

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 11170409 is about 3342.2161809195. The cubic root of 11170409 is about 223.5405722213.

The spelling of 11170409 in words is "eleven million, one hundred seventy thousand, four hundred nine".