3851385 has 16 divisors (see below), whose sum is σ = 6228096. Its totient is φ = 2032128.

The previous prime is 3851377. The next prime is 3851387. The reversal of 3851385 is 5831583.

It is not a de Polignac number, because 3851385 - 2³ = 3851377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3851387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132 + ... + 2778.

It is an arithmetic number, because the mean of its divisors is an integer number (389256).

Almost surely, 2^3851385 is an apocalyptic number.

It is an amenable number.

3851385 is a deficient number, since it is larger than the sum of its proper divisors (2376711).

3851385 is a wasteful number, since it uses less digits than its factorization.

3851385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2752.

The product of its digits is 14400, while the sum is 33.

The square root of 3851385 is about 1962.4945859798. The cubic root of 3851385 is about 156.7493125636.

It can be divided in two parts, 385 and 1385, that added together give a triangular number (1770 = T₅₉).

The spelling of 3851385 in words is "three million, eight hundred fifty-one thousand, three hundred eighty-five".