3861385 has 8 divisors (see below), whose sum is σ = 5054976. Its totient is φ = 2808240.

The previous prime is 3861383. The next prime is 3861413. The reversal of 3861385 is 5831683.

It is a happy number.

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

It is not a de Polignac number, because 3861385 - 2¹ = 3861383 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3861385.

It is not an unprimeable number, because it can be changed into a prime (3861383) 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, 35049 + ... + 35158.

It is an arithmetic number, because the mean of its divisors is an integer number (631872).

Almost surely, 2^3861385 is an apocalyptic number.

It is an amenable number.

3861385 is a deficient number, since it is larger than the sum of its proper divisors (1193591).

3861385 is a wasteful number, since it uses less digits than its factorization.

3861385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70223.

The product of its digits is 17280, while the sum is 34.

The square root of 3861385 is about 1965.0407120464. The cubic root of 3861385 is about 156.8848602026.

It can be divided in two parts, 386 and 1385, that added together give a palindrome (1771).

The spelling of 3861385 in words is "three million, eight hundred sixty-one thousand, three hundred eighty-five".