3855903 has 4 divisors (see below), whose sum is σ = 5141208. Its totient is φ = 2570600.

The previous prime is 3855857. The next prime is 3855913. The reversal of 3855903 is 3095583.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3855903 - 2⁸ = 3855647 is a prime.

It is a D-number.

3855903 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3855913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 642648 + ... + 642653.

It is an arithmetic number, because the mean of its divisors is an integer number (1285302).

Almost surely, 2^3855903 is an apocalyptic number.

3855903 is a deficient number, since it is larger than the sum of its proper divisors (1285305).

3855903 is a wasteful number, since it uses less digits than its factorization.

3855903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285304.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 3855903 is about 1963.6453345755. The cubic root of 3855903 is about 156.8105820074.

The spelling of 3855903 in words is "three million, eight hundred fifty-five thousand, nine hundred three".