11289409 has 2 divisors, whose sum is σ = 11289410. Its totient is φ = 11289408.

The previous prime is 11289379. The next prime is 11289413. The reversal of 11289409 is 90498211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9734400 + 1555009 = 3120^2 + 1247^2 .

It is a cyclic number.

It is not a de Polignac number, because 11289409 - 2¹¹ = 11287361 is a prime.

It is not a weakly prime, because it can be changed into another prime (11289419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5644704 + 5644705.

It is an arithmetic number, because the mean of its divisors is an integer number (5644705).

Almost surely, 2^11289409 is an apocalyptic number.

It is an amenable number.

11289409 is a deficient number, since it is larger than the sum of its proper divisors (1).

11289409 is an equidigital number, since it uses as much as digits as its factorization.

11289409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 11289409 is about 3359.9715772607. The cubic root of 11289409 is about 224.3315734165.

The spelling of 11289409 in words is "eleven million, two hundred eighty-nine thousand, four hundred nine".