3855539 has 2 divisors, whose sum is σ = 3855540. Its totient is φ = 3855538.

The previous prime is 3855503. The next prime is 3855541. The reversal of 3855539 is 9355583.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3855539 - 2¹² = 3851443 is a prime.

It is a Sophie Germain prime.

Together with 3855541, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3855239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1927769 + 1927770.

It is an arithmetic number, because the mean of its divisors is an integer number (1927770).

Almost surely, 2^3855539 is an apocalyptic number.

3855539 is a deficient number, since it is larger than the sum of its proper divisors (1).

3855539 is an equidigital number, since it uses as much as digits as its factorization.

3855539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81000, while the sum is 38.

The square root of 3855539 is about 1963.5526476262. The cubic root of 3855539 is about 156.8056475085.

The spelling of 3855539 in words is "three million, eight hundred fifty-five thousand, five hundred thirty-nine".