3855415 has 8 divisors (see below), whose sum is σ = 4637808. Its totient is φ = 3076800.

The previous prime is 3855409. The next prime is 3855419. The reversal of 3855415 is 5145583.

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

It is not a de Polignac number, because 3855415 - 2⁷ = 3855287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3855419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2364 + ... + 3646.

It is an arithmetic number, because the mean of its divisors is an integer number (579726).

Almost surely, 2^3855415 is an apocalyptic number.

3855415 is a deficient number, since it is larger than the sum of its proper divisors (782393).

3855415 is a wasteful number, since it uses less digits than its factorization.

3855415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1889.

The product of its digits is 12000, while the sum is 31.

The square root of 3855415 is about 1963.5210719521. The cubic root of 3855415 is about 156.8039664544.

It can be divided in two parts, 3 and 855415, that multiplied together give a triangular number (2566245 = T₂₂₆₅).

The spelling of 3855415 in words is "three million, eight hundred fifty-five thousand, four hundred fifteen".