3855109 has 4 divisors (see below), whose sum is σ = 3870720. Its totient is φ = 3839500.

The previous prime is 3855091. The next prime is 3855127. The reversal of 3855109 is 9015583.

3855109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (3855091) and next prime (3855127).

It is a cyclic number.

It is not a de Polignac number, because 3855109 - 2¹³ = 3846917 is a prime.

It is a super-3 number, since 3×3855109³ (a number of 21 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3855149) by changing a digit.

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, 7429 + ... + 7930.

It is an arithmetic number, because the mean of its divisors is an integer number (967680).

Almost surely, 2^3855109 is an apocalyptic number.

It is an amenable number.

3855109 is a deficient number, since it is larger than the sum of its proper divisors (15611).

3855109 is a wasteful number, since it uses less digits than its factorization.

3855109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15610.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 3855109 is about 1963.4431491642. The cubic root of 3855109 is about 156.7998178925.

The spelling of 3855109 in words is "three million, eight hundred fifty-five thousand, one hundred nine".