3855838 has 24 divisors (see below), whose sum is σ = 7029072. Its totient is φ = 1553664.

The previous prime is 3855829. The next prime is 3855851. The reversal of 3855838 is 8385583.

It is a self number, because there is not a number n which added to its sum of digits gives 3855838.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3570 + ... + 4522.

It is an arithmetic number, because the mean of its divisors is an integer number (292878).

Almost surely, 2^3855838 is an apocalyptic number.

3855838 is a deficient number, since it is larger than the sum of its proper divisors (3173234).

3855838 is a wasteful number, since it uses less digits than its factorization.

3855838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996 (or 979 counting only the distinct ones).

The product of its digits is 115200, while the sum is 40.

The square root of 3855838 is about 1963.6287836554. The cubic root of 3855838 is about 156.8097008697.

The spelling of 3855838 in words is "three million, eight hundred fifty-five thousand, eight hundred thirty-eight".