3855890 has 8 divisors (see below), whose sum is σ = 6940620. Its totient is φ = 1542352.

The previous prime is 3855857. The next prime is 3855913. The reversal of 3855890 is 985583.

3855890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3690241 + 165649 = 1921^2 + 407^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 192785 + ... + 192804.

Almost surely, 2^3855890 is an apocalyptic number.

3855890 is a deficient number, since it is larger than the sum of its proper divisors (3084730).

3855890 is a wasteful number, since it uses less digits than its factorization.

3855890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385596.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 3855890 is about 1963.6420244026. The cubic root of 3855890 is about 156.8104057807.

The spelling of 3855890 in words is "three million, eight hundred fifty-five thousand, eight hundred ninety".