11535409 has 2 divisors, whose sum is σ = 11535410. Its totient is φ = 11535408.

The previous prime is 11535373. The next prime is 11535421. The reversal of 11535409 is 90453511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6517809 + 5017600 = 2553^2 + 2240^2 .

It is a cyclic number.

It is not a de Polignac number, because 11535409 - 2⁷ = 11535281 is a prime.

It is not a weakly prime, because it can be changed into another prime (11535449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5767704 + 5767705.

It is an arithmetic number, because the mean of its divisors is an integer number (5767705).

Almost surely, 2^11535409 is an apocalyptic number.

It is an amenable number.

11535409 is a deficient number, since it is larger than the sum of its proper divisors (1).

11535409 is an equidigital number, since it uses as much as digits as its factorization.

11535409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 11535409 is about 3396.3817512170. The cubic root of 11535409 is about 225.9492994577.

The spelling of 11535409 in words is "eleven million, five hundred thirty-five thousand, four hundred nine".