3855909 has 8 divisors (see below), whose sum is σ = 5238432. Its totient is φ = 2522000.

The previous prime is 3855857. The next prime is 3855913. The reversal of 3855909 is 9095583.

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

It is a cyclic number.

It is not a de Polignac number, because 3855909 - 2⁷ = 3855781 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3855919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11967 + ... + 12284.

It is an arithmetic number, because the mean of its divisors is an integer number (654804).

Almost surely, 2^3855909 is an apocalyptic number.

It is an amenable number.

3855909 is a deficient number, since it is larger than the sum of its proper divisors (1382523).

3855909 is a wasteful number, since it uses less digits than its factorization.

3855909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24307.

The product of its (nonzero) digits is 48600, while the sum is 39.

The square root of 3855909 is about 1963.6468623457. The cubic root of 3855909 is about 156.8106633427.

The spelling of 3855909 in words is "three million, eight hundred fifty-five thousand, nine hundred nine".