11193409 has 2 divisors, whose sum is σ = 11193410. Its totient is φ = 11193408.

The previous prime is 11193401. The next prime is 11193437. The reversal of 11193409 is 90439111.

It is a happy number.

It is an a-pointer prime, because the next prime (11193437) can be obtained adding 11193409 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6265009 + 4928400 = 2503^2 + 2220^2 .

It is a cyclic number.

It is not a de Polignac number, because 11193409 - 2³ = 11193401 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11193401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5596704 + 5596705.

It is an arithmetic number, because the mean of its divisors is an integer number (5596705).

Almost surely, 2^11193409 is an apocalyptic number.

It is an amenable number.

11193409 is a deficient number, since it is larger than the sum of its proper divisors (1).

11193409 is an equidigital number, since it uses as much as digits as its factorization.

11193409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 11193409 is about 3345.6552422508. The cubic root of 11193409 is about 223.6938912399.

The spelling of 11193409 in words is "eleven million, one hundred ninety-three thousand, four hundred nine".