11380409 has 2 divisors, whose sum is σ = 11380410. Its totient is φ = 11380408.

The previous prime is 11380403. The next prime is 11380433. The reversal of 11380409 is 90408311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6553600 + 4826809 = 2560^2 + 2197^2 .

It is a cyclic number.

It is not a de Polignac number, because 11380409 - 2⁴ = 11380393 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (11380403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5690204 + 5690205.

It is an arithmetic number, because the mean of its divisors is an integer number (5690205).

Almost surely, 2^11380409 is an apocalyptic number.

It is an amenable number.

11380409 is a deficient number, since it is larger than the sum of its proper divisors (1).

11380409 is an equidigital number, since it uses as much as digits as its factorization.

11380409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 11380409 is about 3373.4861790142. The cubic root of 11380409 is about 224.9327140366.

The spelling of 11380409 in words is "eleven million, three hundred eighty thousand, four hundred nine".