3806609 has 2 divisors, whose sum is σ = 3806610. Its totient is φ = 3806608.

The previous prime is 3806599. The next prime is 3806617. The reversal of 3806609 is 9066083.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3312400 + 494209 = 1820^2 + 703^2 .

It is a cyclic number.

It is not a de Polignac number, because 3806609 - 2²⁰ = 2758033 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3806639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1903304 + 1903305.

It is an arithmetic number, because the mean of its divisors is an integer number (1903305).

Almost surely, 2^3806609 is an apocalyptic number.

It is an amenable number.

3806609 is a deficient number, since it is larger than the sum of its proper divisors (1).

3806609 is an equidigital number, since it uses as much as digits as its factorization.

3806609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 3806609 is about 1951.0533052687. The cubic root of 3806609 is about 156.1394900721.

The spelling of 3806609 in words is "three million, eight hundred six thousand, six hundred nine".