3698209 has 2 divisors, whose sum is σ = 3698210. Its totient is φ = 3698208.

The previous prime is 3698203. The next prime is 3698213. The reversal of 3698209 is 9028963.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3610000 + 88209 = 1900^2 + 297^2 .

It is a cyclic number.

It is not a de Polignac number, because 3698209 - 2⁷ = 3698081 is a prime.

It is a d-powerful number, because it can be written as 3¹³ + 6² + 9 + 8⁷ + 2⁷ + 0 + 9⁴ .

It is not a weakly prime, because it can be changed into another prime (3698203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1849104 + 1849105.

It is an arithmetic number, because the mean of its divisors is an integer number (1849105).

Almost surely, 2^3698209 is an apocalyptic number.

It is an amenable number.

3698209 is a deficient number, since it is larger than the sum of its proper divisors (1).

3698209 is an equidigital number, since it uses as much as digits as its factorization.

3698209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 3698209 is about 1923.0728015340. The cubic root of 3698209 is about 154.6430774526.

The spelling of 3698209 in words is "three million, six hundred ninety-eight thousand, two hundred nine".