4097209 has 2 divisors, whose sum is σ = 4097210. Its totient is φ = 4097208.

The previous prime is 4097189. The next prime is 4097213. The reversal of 4097209 is 9027904.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3250809 + 846400 = 1803^2 + 920^2 .

It is a cyclic number.

It is not a de Polignac number, because 4097209 - 2⁷ = 4097081 is a prime.

It is not a weakly prime, because it can be changed into another prime (4097279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2048604 + 2048605.

It is an arithmetic number, because the mean of its divisors is an integer number (2048605).

Almost surely, 2^4097209 is an apocalyptic number.

It is an amenable number.

4097209 is a deficient number, since it is larger than the sum of its proper divisors (1).

4097209 is an equidigital number, since it uses as much as digits as its factorization.

4097209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 4097209 is about 2024.1563674776. The cubic root of 4097209 is about 160.0157406389.

The spelling of 4097209 in words is "four million, ninety-seven thousand, two hundred nine".