5118409 has 2 divisors, whose sum is σ = 5118410. Its totient is φ = 5118408.

The previous prime is 5118403. The next prime is 5118431. The reversal of 5118409 is 9048115.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4826809 + 291600 = 2197^2 + 540^2 .

It is a cyclic number.

It is not a de Polignac number, because 5118409 - 2¹¹ = 5116361 is a prime.

It is a super-2 number, since 2×5118409² = 52396221382562, which contains 22 as substring.

5118409 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (5118403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2559204 + 2559205.

It is an arithmetic number, because the mean of its divisors is an integer number (2559205).

Almost surely, 2^5118409 is an apocalyptic number.

It is an amenable number.

5118409 is a deficient number, since it is larger than the sum of its proper divisors (1).

5118409 is an equidigital number, since it uses as much as digits as its factorization.

5118409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 5118409 is about 2262.3901078284. The cubic root of 5118409 is about 172.3369207198.

The spelling of 5118409 in words is "five million, one hundred eighteen thousand, four hundred nine".