3855558 has 32 divisors (see below), whose sum is σ = 9031680. Its totient is φ = 1074240.

The previous prime is 3855557. The next prime is 3855571. The reversal of 3855558 is 8555583.

It is a super-3 number, since 3×3855558³ (a number of 21 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3855557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 603 + ... + 2841.

It is an arithmetic number, because the mean of its divisors is an integer number (282240).

Almost surely, 2^3855558 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3855558, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4515840).

3855558 is an abundant number, since it is smaller than the sum of its proper divisors (5176122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3855558 is a wasteful number, since it uses less digits than its factorization.

3855558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2292.

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

The square root of 3855558 is about 1963.5574857895. The cubic root of 3855558 is about 156.8059050862.

The spelling of 3855558 in words is "three million, eight hundred fifty-five thousand, five hundred fifty-eight".