3858555 has 16 divisors (see below), whose sum is σ = 6276384. Its totient is φ = 2023680.

The previous prime is 3858529. The next prime is 3858581. The reversal of 3858555 is 5558583.

It is an interprime number because it is at equal distance from previous prime (3858529) and next prime (3858581).

It is not a de Polignac number, because 3858555 - 2⁵ = 3858523 is a prime.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 1194 + ... + 3023.

It is an arithmetic number, because the mean of its divisors is an integer number (392274).

Almost surely, 2^3858555 is an apocalyptic number.

3858555 is a deficient number, since it is larger than the sum of its proper divisors (2417829).

3858555 is a wasteful number, since it uses less digits than its factorization.

3858555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4286.

The product of its digits is 120000, while the sum is 39.

The square root of 3858555 is about 1964.3204931986. The cubic root of 3858555 is about 156.8465239870.

The spelling of 3858555 in words is "three million, eight hundred fifty-eight thousand, five hundred fifty-five".