3691859 has 2 divisors, whose sum is σ = 3691860. Its totient is φ = 3691858.

The previous prime is 3691847. The next prime is 3691913. The reversal of 3691859 is 9581963.

3691859 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (9581963) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3691859 - 2⁴ = 3691843 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 3¹³ + 6³ + 9² + 1 + 8⁷ + 5 + 9² .

It is not a weakly prime, because it can be changed into another prime (3691819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1845929 + 1845930.

It is an arithmetic number, because the mean of its divisors is an integer number (1845930).

Almost surely, 2^3691859 is an apocalyptic number.

3691859 is a deficient number, since it is larger than the sum of its proper divisors (1).

3691859 is an equidigital number, since it uses as much as digits as its factorization.

3691859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58320, while the sum is 41.

The square root of 3691859 is about 1921.4210886737. The cubic root of 3691859 is about 154.5545169164.

The spelling of 3691859 in words is "three million, six hundred ninety-one thousand, eight hundred fifty-nine".