3858845 has 4 divisors (see below), whose sum is σ = 4630620. Its totient is φ = 3087072.

The previous prime is 3858839. The next prime is 3858851. The reversal of 3858845 is 5488583.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5488583 = 1483 ⋅3701.

It is an interprime number because it is at equal distance from previous prime (3858839) and next prime (3858851).

It can be written as a sum of positive squares in 2 ways, for example, as 1530169 + 2328676 = 1237^2 + 1526^2 .

It is a cyclic number.

It is not a de Polignac number, because 3858845 - 2⁶ = 3858781 is a prime.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 385880 + ... + 385889.

It is an arithmetic number, because the mean of its divisors is an integer number (1157655).

Almost surely, 2^3858845 is an apocalyptic number.

It is an amenable number.

3858845 is a deficient number, since it is larger than the sum of its proper divisors (771775).

3858845 is an equidigital number, since it uses as much as digits as its factorization.

3858845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771774.

The product of its digits is 153600, while the sum is 41.

The square root of 3858845 is about 1964.3943086865. The cubic root of 3858845 is about 156.8504532949.

The spelling of 3858845 in words is "three million, eight hundred fifty-eight thousand, eight hundred forty-five".