5400209 has 2 divisors, whose sum is σ = 5400210. Its totient is φ = 5400208.

The previous prime is 5400137. The next prime is 5400221. The reversal of 5400209 is 9020045.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4190209 + 1210000 = 2047^2 + 1100^2 .

It is a cyclic number.

It is not a de Polignac number, because 5400209 - 2¹⁶ = 5334673 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5400259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2700104 + 2700105.

It is an arithmetic number, because the mean of its divisors is an integer number (2700105).

Almost surely, 2^5400209 is an apocalyptic number.

It is an amenable number.

5400209 is a deficient number, since it is larger than the sum of its proper divisors (1).

5400209 is an equidigital number, since it uses as much as digits as its factorization.

5400209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 5400209 is about 2323.8349769293. The cubic root of 5400209 is about 175.4433276699.

The spelling of 5400209 in words is "five million, four hundred thousand, two hundred nine".