5391209 has 2 divisors, whose sum is σ = 5391210. Its totient is φ = 5391208.

The previous prime is 5391181. The next prime is 5391247. The reversal of 5391209 is 9021935.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4494400 + 896809 = 2120^2 + 947^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5391209 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 (5391259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2695604 + 2695605.

It is an arithmetic number, because the mean of its divisors is an integer number (2695605).

Almost surely, 2^5391209 is an apocalyptic number.

It is an amenable number.

5391209 is a deficient number, since it is larger than the sum of its proper divisors (1).

5391209 is an equidigital number, since it uses as much as digits as its factorization.

5391209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 5391209 is about 2321.8977152321. The cubic root of 5391209 is about 175.3458087316.

The spelling of 5391209 in words is "five million, three hundred ninety-one thousand, two hundred nine".