3861386 has 4 divisors (see below), whose sum is σ = 5792082. Its totient is φ = 1930692.

The previous prime is 3861383. The next prime is 3861413. The reversal of 3861386 is 6831683.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6831683 = 79 ⋅86477.

It can be written as a sum of positive squares in only one way, i.e., 3478225 + 383161 = 1865^2 + 619^2 .

It is a Curzon number.

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 as a sum of consecutive naturals, namely, 965345 + ... + 965348.

Almost surely, 2^3861386 is an apocalyptic number.

3861386 is a deficient number, since it is larger than the sum of its proper divisors (1930696).

3861386 is a wasteful number, since it uses less digits than its factorization.

3861386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1930695.

The product of its digits is 20736, while the sum is 35.

The square root of 3861386 is about 1965.0409664941. The cubic root of 3861386 is about 156.8848737456.

The spelling of 3861386 in words is "three million, eight hundred sixty-one thousand, three hundred eighty-six".